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Cast On Critical Strike Support

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Cast On Critical Strike SupportSupport, Spell, Trigger
Icon: &
Mana Multiplier: 140%
Can store 1 use(s)
Cooldown Time: 0.50 sec
Drop Level: 38
Requires Level 38
Per 1% Quality:
1% increased Critical Strike Chance
Supported Attacks will Cast a Supported Spell when you Crit an Enemy
Supported Triggered Spells deal (20-39)% more Spell Damage
You cannot Cast Supported Spells directly
This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
Cast On Critical Strike Support inventory icon.png

Cast on Critical Strike (commonly referred to as CoC) is a support gem that causes linked spells to trigger when the player scores a critical strike with the attack skill it is linked to.

Skill functions and interactions

The chance to trigger is rolled separately for each enemy that received a critical strike, so it is possible to get multiple casts on one skill use if multiple enemies get hit.

In case of multiple spells linked to one attack skill this support will roll its chance to cast for each spell sequentially with 100% chance to cast when the hit crits, rolled once against the critical strike chance, and again against the accuracy rating to make sure it has hit. In the case of a hits can't be evaded modifier, this second roll is counted as 100%.

Cooldown Time: When a supported spell is successfully cast, it and all supported spells of the same name are put on cooldown for 500 milliseconds. This means that a given spell can only trigger once per critical strike, and reduces the effect of linking multiple copies of the same spell to this support (especially when it is at a higher gem level). It is important to note that this cooldown does not apply to the gem as whole; you can trigger multiple spells within the 500 millisecond cooldown time as long as they are different.

Gem level progression

LevelLvl.dexterityintelligenceMore Spell
Damage %
Exp.Total Exp.
138402720%00
240412921%388,734388,734
342433022%477,437866,171
444453123%583,7861,449,957
546473324%710,3592,160,316
648493425%1,355,5113,515,827
750513526%1,138,8774,654,704
852533727%1,368,2336,022,937
954553828%1,638,3387,661,275
1056573929%1,956,6489,617,923
1158584130%3,655,18413,273,107
1260604231%3,017,32716,290,434
1362624332%3,576,23219,866,666
1464644433%4,231,66724,098,333
1565654534%2,395,07826,493,411
1666664635%8,421,06334,914,474
1767674636%16,159,98351,074,457
1868684737%41,170,36792,244,824
1969694838%86,794,448179,039,272
2070704839%157,405,063336,444,335
2172725040%N/AN/A
2274N/AN/A41%N/AN/A
2376N/AN/A42%N/AN/A
2478N/AN/A43%N/AN/A
2580N/AN/A44%N/AN/A
2682N/AN/A45%N/AN/A
2784N/AN/A46%N/AN/A
2886N/AN/A47%N/AN/A
2988N/AN/A48%N/AN/A
3090N/AN/A49%N/AN/A

Quest reward

This skill is given as quest reward for the following quests:
ClassMarauderTemplarWitchShadowRangerDuelistScion
Quest
A Fixture of Fate
Act 3
Cruel
no
no
no
yes
yes
no
yes

Vendor reward

This skill can be bought at the listed npc vendors after completing the following quests:
ClassMarauderTemplarWitchShadowRangerDuelistScion
Quest
The Eternal Nightmare
Act 4
Petarus and Vanja

Cost:
Orb of Alchemy inventory icon.pngOrb of AlchemyOrb of AlchemyStack Size: 10Drop Level: 2Upgrades a normal item to a rare itemRight click this item then left click a normal item to apply it.
Shift click to unstack.
Orb of Alchemy inventory icon.png
yes
yes
yes
yes
yes
yes
yes

Strategy

Linking with other skills

At a bare minimum, a Cast On Critical Strike setup will require three gems: an attack, Cast On Critical Strike itself, and a spell to be triggered. This generally leaves at most three other supports that may be linked. If possible, the supports should both increase the number of times Cast On Critical Strike triggers, and increase the effectiveness of the triggered spells. Note that Cast On Critical Strike cannot trigger more than once per frame, so staggered hits (e.g. multiple projectiles) are preferred to simultaneous hits (e.g. most area of effect damage) which will only proc at most once per attack.

Projectile

By far the most popular family of Cast on Critical Strike setups, projectile Cast On Critical Strike focuses on the projectile keyword. Popular attacks for this purpose include:

  • Spectral Throw inventory icon.pngSpectral ThrowSpectral ThrowProjectile, Attack
    Mana Cost: (7 to 9)
    Cast Time: 1.00 sec
    Projectile Speed: 1000
    Drop Level: 1Throws a spectral copy of your melee weapon. It flies out and then returns to you, in a spinning attack that strikes enemies in its path.Per 1% Quality:
    0.5% increased Attack Speed
    Deals (54-90.5)% of Base Attack DamagePlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Spectral Throw skill icon.png
    Spectral Throw inventory icon.png
    : Naturally staggers hits, automatic pierce, allows the use of melee weapons at range.
  • Barrage inventory icon.pngBarrageBarrageAttack, Bow
    Mana Cost: (7 to 11)
    Cast Time: 1.00 sec
    Drop Level: 12
    Requires Level 12
    After a short preparation time, you attack repeatedly with a ranged weapon. These attacks have a small randomised spread. Only works with Bows and Wands.Per 1% Quality:
    0.5% increased Projectile Damage
    Deals (50-61.4)% of Base Attack Damage
    3 additional Projectiles
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Barrage skill icon.png
    Barrage inventory icon.png
    : Causes a large number of sequential hits per attack.
  • Power Siphon inventory icon.pngPower SiphonPower SiphonAttack, Projectile
    Mana Cost: (13 to 15)
    Cast Time: 1.00 sec
    Projectile Speed: 750
    Drop Level: 12
    Requires Level 12
    Fires your wand, dealing increased damage and granting you a power charge if an enemy is killed by, or soon after, the hit.Per 1% Quality:
    1% increased Damage
    Deals (130-160.4)% of Base Attack Damage
    Culling Strike
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Power Siphon skill icon.png
    Power Siphon inventory icon.png
    : Naturally produces power charges.
  • Split Arrow inventory icon.pngSplit ArrowSplit ArrowAttack, Bow
    Mana Cost: (6 to 10)
    Cast Time: 1.00 sec
    Projectile Speed: 3260
    Drop Level: 1Fires multiple arrows at different targets.Per 1% Quality:
    0.5% increased Attack Speed
    Deals (90-109)% of Base Attack Damage
    (4-6) additional Arrows
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Split Arrow skill icon.png
    Split Arrow inventory icon.png
    : Naturally large number of projectiles.
  • Tornado Shot inventory icon.pngTornado ShotTornado ShotAttack, Bow
    Mana Cost: (8 to 10)
    Cast Time: 1.00 sec
    Projectile Speed: 2173
    Drop Level: 28
    Requires Level 28
    Fires a piercing shot that travels until it reaches the targeted location. It will then fire projectiles out in all directions from that point.Per 1% Quality:
    1% increased Projectile Damage
    Deals (90-109)% of Base Attack Damage
    3 secondary Tornado Shot Projectiles
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Tornado Shot skill icon.png
    Tornado Shot inventory icon.png
    : Piercing on initial arrow(s) and produces three times as many subprojectiles.
  • Frost Blades inventory icon.pngFrost BladesFrost BladesProjectile, Attack, Melee, Cold
    Mana Cost: 6
    Cast Time: 1.00 sec
    Projectile Speed: 2250
    Drop Level: 1Attack with increased range, releasing icy blades from the struck enemy that fly at other enemies. Requires a Melee Weapon.Per 1% Quality:
    1% increased Projectile Damage
    Deals (100-141.8)% of Base Attack Damage
    (4-7) additional Projectiles
    +(18-21) to Melee Weapon Range
    40% of Physical Damage converted to Cold Damage
    (0-19)% increased Projectile Speed
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Frost Blades skill icon.png
    Frost Blades inventory icon.png
    : Five projectiles plus the initial hit.
  • Molten Strike inventory icon.pngMolten StrikeMolten StrikeProjectile, Attack, AoE, Melee, Fire
    Mana Cost: 6
    Cast Time: 1.00 sec
    Projectile Speed: 750
    Drop Level: 1Attacks a target with physical and fire damage, causing balls of molten magma to launch forth from your weapon as you swing. These will explode, causing AoE attack damage to enemies where they land.Per 1% Quality:
    1% increased Fire Damage
    Deals (120-146.6)% of Base Attack Damage
    60% of Physical Damage Converted to Fire Damage
    2 additional Projectiles
    40% less Projectile Damage
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Molten Strike skill icon.png
    Molten Strike inventory icon.png
    : Magma balls generally hit on different frames, causing a large number of hits.
  • Lightning Strike inventory icon.pngLightning StrikeLightning StrikeProjectile, Attack, Melee, Lightning
    Mana Cost: 6
    Cast Time: 1.00 sec
    Drop Level: 12
    Requires Level 12
    Infuses your melee weapon with electrical energies as you swing. In addition to converting some of your physical damage to lightning damage, the stored energy is released from the weapon as projectiles as you strike, flying out behind your target to hit farther-away enemies. The projectiles cannot miss if the melee attack hit its target.Per 1% Quality:
    2% chance of Projectiles Piercing
    Deals (130-175.6)% of Base Attack Damage
    50% of Physical Damage Converted to Lightning Damage
    (4-7) additional Projectiles
    25% less Projectile Damage
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Lightning Strike skill icon.png
    Lightning Strike inventory icon.png
    : Three projectiles plus the initial hit.

Support skills that affect both the number of hits and crits projectile attacks generate and affect projectile spells include:

  • Greater Multiple Projectiles Support inventory icon.pngGreater Multiple Projectiles SupportGreater Multiple Projectiles SupportSupport, Projectile
    Icon: P
    Mana Multiplier: 165%
    Drop Level: 38
    Requires Level 38
    Per 1% Quality:
    0.5% increased Attack Speed
    0.5% increased Cast Speed
    4 additional Projectiles
    (35-26)% less Projectile Damage
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Greater Multiple Projectiles Support inventory icon.png
  • Chain Support inventory icon.pngChain SupportChain SupportSupport, Chaining, Projectile
    Icon: c
    Mana Multiplier: 150%
    Drop Level: 38
    Requires Level 38
    Per 1% Quality:
    1% increased Projectile Speed
    Chain +2 Times
    (50-31)% less Damage
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Chain Support inventory icon.png
  • Faster Projectiles Support inventory icon.pngFaster Projectiles SupportFaster Projectiles SupportSupport, Projectile
    Icon: j
    Mana Multiplier: 110%
    Drop Level: 31
    Requires Level 31
    Per 1% Quality:
    0.5% increased Attack Speed
    0.5% increased Cast Speed
    (50-69)% increased Projectile Speed
    (20-29)% increased Projectile Damage
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Faster Projectiles Support inventory icon.png
    for Spectral Throw inventory icon.pngSpectral ThrowSpectral ThrowProjectile, Attack
    Mana Cost: (7 to 9)
    Cast Time: 1.00 sec
    Projectile Speed: 1000
    Drop Level: 1Throws a spectral copy of your melee weapon. It flies out and then returns to you, in a spinning attack that strikes enemies in its path.Per 1% Quality:
    0.5% increased Attack Speed
    Deals (54-90.5)% of Base Attack DamagePlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Spectral Throw skill icon.png
    Spectral Throw inventory icon.png
    and certain spells
  • Fork Support inventory icon.pngFork SupportFork SupportSupport, Projectile
    Icon: Y
    Mana Multiplier: 130%
    Drop Level: 31
    Requires Level 31
    Per 1% Quality:
    0.5% increased Projectile Damage
    (30-11)% less Projectile Damage
    Projectiles Fork
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Fork Support inventory icon.png
  • Pierce Support inventory icon.pngPierce SupportPierce SupportSupport, Projectile
    Icon: p
    Mana Multiplier: 130%
    Drop Level: 31
    Requires Level 31
    Per 1% Quality:
    0.5% increased Projectile Damage
    50% chance of Projectiles Piercing
    (10-19)% more Projectile Damage
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Pierce Support inventory icon.png
  • Power Charge On Critical Support inventory icon.pngPower Charge On Critical SupportPower Charge On Critical SupportSupport
    Icon: P
    Mana Multiplier: 110%
    Drop Level: 18
    Requires Level 18
    Per 1% Quality:
    1% increased Critical Strike Chance
    (35-54)% chance to gain a Power Charge on Critical StrikeThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Power Charge On Critical Support inventory icon.png
  • Increased Critical Strikes Support inventory icon.pngIncreased Critical Strikes SupportIncreased Critical Strikes SupportSupport
    Icon: s
    Mana Multiplier: 115%
    Drop Level: 8
    Requires Level 8
    Per 1% Quality:
    1% increased Critical Strike Chance
    (50-88)% increased Critical Strike Chance
    +(1-1.9)% to Critical Strike Chance
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Increased Critical Strikes Support inventory icon.png

Useful projectile spells and their support limitations include:

  • Arctic Breath inventory icon.pngArctic BreathArctic BreathProjectile, Spell, Duration, AoE, Cold
    Radius: 12
    Mana Cost: (11 to 21)
    Cast Time: 0.80 sec
    Critical Strike Chance: 5.00%
    Projectile Speed: 844
    Drop Level: 28
    Requires Level 28
    Fires a frozen skull projectile that leaves a trail of ground ice behind it. It explodes on impact, creating more ground ice and damaging targets within an area.Per 1% Quality:
    0.5% increased Area of Effect radius
    Deals (52-608) to (78-913) Cold Damage
    Base duration is (0.88-1.65) seconds
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Arctic Breath skill icon.png
    Arctic Breath inventory icon.png
    : Does not explode on pierce, fork, or chain.
  • Ball Lightning inventory icon.pngBall LightningBall LightningProjectile, Spell, AoE, Lightning
    Radius: 16
    Mana Cost: (14 to 27)
    Cast Time: 0.80 sec
    Critical Strike Chance: 5.00%
    Damage Effectiveness: 20%
    Projectile Speed: 400
    Drop Level: 28
    Requires Level 28
    Fires a slow-moving projectile that periodically damages enemies in an area around it with bolts of lightning.Per 1% Quality:
    1% increased Lightning Damage
    Deals (2-14) to (32-260) Lightning DamagePlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Ball Lightning skill icon.png
    Ball Lightning inventory icon.png
    : Not affected by pierce, fork, or chain; hit rate limited per cast, not per projectile.
  • Ethereal Knives inventory icon.pngEthereal KnivesEthereal KnivesProjectile, Spell
    Mana Cost: (5 to 23)
    Cast Time: 0.60 sec
    Critical Strike Chance: 6.00%
    Projectile Speed: 1300
    Drop Level: 1Fires an arc of knives in front of the caster which deals physical damage.Per 1% Quality:
    1% increased Projectile Speed
    Deals (4-459) to (6-688) Physical Damage
    9 additional Projectiles
    (0-19)% increased Projectile Speed
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Ethereal Knives skill icon.png
    Ethereal Knives inventory icon.png
    : Little benefit from Greater Multiple Projectiles Support inventory icon.pngGreater Multiple Projectiles SupportGreater Multiple Projectiles SupportSupport, Projectile
    Icon: P
    Mana Multiplier: 165%
    Drop Level: 38
    Requires Level 38
    Per 1% Quality:
    0.5% increased Attack Speed
    0.5% increased Cast Speed
    4 additional Projectiles
    (35-26)% less Projectile Damage
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Greater Multiple Projectiles Support inventory icon.png
    but more from Faster Projectiles Support inventory icon.pngFaster Projectiles SupportFaster Projectiles SupportSupport, Projectile
    Icon: j
    Mana Multiplier: 110%
    Drop Level: 31
    Requires Level 31
    Per 1% Quality:
    0.5% increased Attack Speed
    0.5% increased Cast Speed
    (50-69)% increased Projectile Speed
    (20-29)% increased Projectile Damage
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Faster Projectiles Support inventory icon.png
    .
  • Fireball inventory icon.pngFireballFireballProjectile, Spell, AoE, Fire
    Radius: 9
    Mana Cost: (6 to 26)
    Cast Time: 0.85 sec
    Critical Strike Chance: 6.00%
    Projectile Speed: 1040
    Drop Level: 1Unleashes a ball of fire towards a target which explodes, damaging nearby foes.Per 1% Quality:
    0.5% chance to Ignite enemies
    Deals (7-739) to (10-1109) Fire Damage
    (20-39)% chance to Ignite enemies
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Fireball skill icon.png
    Fireball inventory icon.png
    : Does not explode on pierce, fork, or chain.
  • Freezing Pulse inventory icon.pngFreezing PulseFreezing PulseProjectile, Spell, Cold
    Mana Cost: (4 to 18)
    Cast Time: 0.65 sec
    Critical Strike Chance: 6.00%
    Damage Effectiveness: 125%
    Projectile Speed: 1800
    Drop Level: 1An icy projectile which has a chance to freeze enemies it passes through. The projectile fades quickly, reducing damage and freezing chance until it runs out of time and dissipates completely.Per 1% Quality:
    2% increased Projectile Speed
    Deals (7-689) to (11-1034) Cold Damage
    (0-19)% increased Projectile Speed
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Freezing Pulse skill icon.png
    Freezing Pulse inventory icon.png
    : Benefits from Faster Projectiles Support inventory icon.pngFaster Projectiles SupportFaster Projectiles SupportSupport, Projectile
    Icon: j
    Mana Multiplier: 110%
    Drop Level: 31
    Requires Level 31
    Per 1% Quality:
    0.5% increased Attack Speed
    0.5% increased Cast Speed
    (50-69)% increased Projectile Speed
    (20-29)% increased Projectile Damage
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Faster Projectiles Support inventory icon.png
    .
  • Ice Spear inventory icon.pngIce SpearIce SpearProjectile, Spell, Cold
    Mana Cost: (9 to 27)
    Cast Time: 0.85 sec
    Critical Strike Chance: 7.00%
    Damage Effectiveness: 80%
    Projectile Speed: 1000
    Drop Level: 12
    Requires Level 12
    Launches a shard of ice that pierces close enemies, before exploding on a distant enemy with a much higher critical strike chance.Per 1% Quality:
    2% increased Projectile Speed
    Deals (17-548) to (26-822) Cold Damage
    (40-78)% increased Chill Duration on enemies
    Second form has 600% increased Critical Strike Chance
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Ice Spear skill icon.png
    Ice Spear inventory icon.png
    : Already pierces in first form.
  • Magma Orb inventory icon.pngMagma OrbMagma OrbProjectile, Spell, AoE, Fire, Chaining
    Mana Cost: (5 to 22)
    Cast Time: 0.70 sec
    Critical Strike Chance: 5.00%
    Damage Effectiveness: 125%
    Drop Level: 1Lob a fiery orb that explodes as it strikes the ground. The skill chains, releasing another fiery orb that repeats this effect.Per 1% Quality:
    1% increased Damage
    Deals (6-637) to (9-956) Fire Damage
    Chain +(1-2) Times
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Magma Orb skill icon.png
    Magma Orb inventory icon.png
  • Spark inventory icon.pngSparkSparkProjectile, Spell, Duration, Lightning
    Mana Cost: (5 to 23)
    Cast Time: 0.65 sec
    Critical Strike Chance: 6.00%
    Damage Effectiveness: 70%
    Projectile Speed: 560
    Drop Level: 1Launches unpredictable sparks that move randomly until they hit an enemy or expire.Per 1% Quality:
    1% increased Projectile Speed
    Deals (1-44) to (20-832) Lightning Damage
    Base duration is 1.5 seconds
    (4-6) additional Projectiles
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Spark skill icon.png
    Spark inventory icon.png
    : Less benefit from Greater Multiple Projectiles Support inventory icon.pngGreater Multiple Projectiles SupportGreater Multiple Projectiles SupportSupport, Projectile
    Icon: P
    Mana Multiplier: 165%
    Drop Level: 38
    Requires Level 38
    Per 1% Quality:
    0.5% increased Attack Speed
    0.5% increased Cast Speed
    4 additional Projectiles
    (35-26)% less Projectile Damage
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Greater Multiple Projectiles Support inventory icon.png
    but more from Faster Projectiles Support inventory icon.pngFaster Projectiles SupportFaster Projectiles SupportSupport, Projectile
    Icon: j
    Mana Multiplier: 110%
    Drop Level: 31
    Requires Level 31
    Per 1% Quality:
    0.5% increased Attack Speed
    0.5% increased Cast Speed
    (50-69)% increased Projectile Speed
    (20-29)% increased Projectile Damage
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Faster Projectiles Support inventory icon.png
    .

A second spell may satisfactorily be used in place of a support.

Area of Effect

Some attacks have advantageous built-in area of effect:

  • Ground Slam inventory icon.pngGround SlamGround SlamAttack, AoE, Melee
    Radius: 35
    Mana Cost: 6
    Cast Time: 1.00 sec
    Drop Level: 1The character slams the ground in front of them with their main hand weapon, creating a wave that travels forward and damages enemies with an increased chance to stun. Only works with Staves or Maces.Per 1% Quality:
    1.5% increased Stun Duration on enemies
    Deals (90-120.4)% of Base Attack Damage
    25% reduced Enemy Stun Threshold
    (0-19)% increased Area of Effect radius
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Ground Slam skill icon.png
    Ground Slam inventory icon.png
    : The area of effect is progressive, not instant, allowing multiple casts per attack. However, it can only get one cast against a single target.

This works well with spells which have Area of Effect component, such as:

  • Cold Snap inventory icon.pngCold SnapCold SnapSpell, AoE, Cold
    Radius: 16
    Mana Cost: (11 to 28)
    Can store 1 use(s)
    Cooldown Time: 4.00 sec
    Cast Time: 0.85 sec
    Critical Strike Chance: 5.00%
    Damage Effectiveness: 120%
    Drop Level: 4
    Requires Level 4
    Ice crystals protrude from the ground at target location. Monsters in this area take damage and become frozen. The cooldown can be bypassed by expending a Power Charge.Per 1% Quality:
    0.5% increased Area of Effect radius
    Deals (9-462) to (13-693) Cold Damage
    30% chance to Freeze enemies
    30% increased Freeze Duration on enemies
    110% increased Chill Duration on enemies
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Cold Snap skill icon.png
    Cold Snap inventory icon.png
  • Ice Nova inventory icon.pngIce NovaIce NovaSpell, AoE, Cold
    Radius: 30
    Mana Cost: (10 to 31)
    Cast Time: 0.80 sec
    Critical Strike Chance: 6.00%
    Damage Effectiveness: 70%
    Drop Level: 12
    Requires Level 12
    A chilling circle of ice expands from the caster. If the caster targets near one of their Frostbolt projectiles, it will expand from the projectile instead.Per 1% Quality:
    0.5% increased Area of Effect radius
    Deals (14-369) to (21-577) Cold DamagePlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Ice Nova skill icon.png
    Ice Nova inventory icon.png
  • Flame Surge inventory icon.pngFlame SurgeFlame SurgeSpell, AoE, Fire
    Radius: 30
    Mana Cost: (9 to 26)
    Cast Time: 0.50 sec
    Critical Strike Chance: 6.00%
    Drop Level: 12
    Requires Level 12
    Strikes enemies in front of you with a surge of flame. Burning enemies are dealt more damage.Per 1% Quality:
    0.5% increased Cast Speed
    Deals (21-514) to (31-771) Fire Damage
    50% more Damage against Burning enemies
    Cannot Ignite
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Flame Surge skill icon.png
    Flame Surge inventory icon.png
  • Glacial Cascade inventory icon.pngGlacial CascadeGlacial CascadeSpell, AoE, Cold
    Mana Cost: (13 to 26)
    Cast Time: 0.80 sec
    Critical Strike Chance: 5.00%
    Damage Effectiveness: 60%
    Drop Level: 28
    Requires Level 28
    Icicles emerge from the ground in a series of small bursts, each damaging enemies caught in the area.Per 1% Quality:
    1% increased Damage
    Deals (12-110) to (19-169) Physical Damage
    Deals (23-203) to (35-307) Cold Damage
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Glacial Cascade skill icon.png
    Glacial Cascade inventory icon.png
  • Magma Orb inventory icon.pngMagma OrbMagma OrbProjectile, Spell, AoE, Fire, Chaining
    Mana Cost: (5 to 22)
    Cast Time: 0.70 sec
    Critical Strike Chance: 5.00%
    Damage Effectiveness: 125%
    Drop Level: 1Lob a fiery orb that explodes as it strikes the ground. The skill chains, releasing another fiery orb that repeats this effect.Per 1% Quality:
    1% increased Damage
    Deals (6-637) to (9-956) Fire Damage
    Chain +(1-2) Times
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Magma Orb skill icon.png
    Magma Orb inventory icon.png

Support gems which can benefit this setup are:

  • Multistrike Support inventory icon.pngMultistrike SupportMultistrike SupportAttack, Melee, Support
    Icon: 3
    Mana Multiplier: 180%
    Drop Level: 38
    Requires Level 38
    Per 1% Quality:
    0.5% increased Melee Physical Damage
    Supported Melee Attacks Repeat 2 additional times
    (75-94)% more Melee Attack Speed
    30% less Attack Damage
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Multistrike Support inventory icon.png
  • Increased Area of Effect Support inventory icon.pngIncreased Area of Effect SupportIncreased Area of Effect SupportSupport, AoE
    Icon: E
    Mana Multiplier: 140%
    Drop Level: 38
    Requires Level 38
    Per 1% Quality:
    0.5% increased Area Damage
    (20-39)% increased Area of Effect radiusThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Increased Area of Effect Support inventory icon.png
  • Concentrated Effect Support inventory icon.pngConcentrated Effect SupportConcentrated Effect SupportSupport, AoE
    Icon: o
    Mana Multiplier: 140%
    Drop Level: 18
    Requires Level 18
    Per 1% Quality:
    0.5% increased Area Damage
    25% less Area of Effect radius
    (40-59)% more Area Damage
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Concentrated Effect Support inventory icon.png
  • Power Charge On Critical Support inventory icon.pngPower Charge On Critical SupportPower Charge On Critical SupportSupport
    Icon: P
    Mana Multiplier: 110%
    Drop Level: 18
    Requires Level 18
    Per 1% Quality:
    1% increased Critical Strike Chance
    (35-54)% chance to gain a Power Charge on Critical StrikeThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Power Charge On Critical Support inventory icon.png
  • Increased Critical Strikes Support inventory icon.pngIncreased Critical Strikes SupportIncreased Critical Strikes SupportSupport
    Icon: s
    Mana Multiplier: 115%
    Drop Level: 8
    Requires Level 8
    Per 1% Quality:
    1% increased Critical Strike Chance
    (50-88)% increased Critical Strike Chance
    +(1-1.9)% to Critical Strike Chance
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Increased Critical Strikes Support inventory icon.png

Minion

Another possibility is to use attacks to trigger minions, which benefit from attack supports. In addition to the projectile skills listed before, we have some other good choices:

  • Double Strike inventory icon.pngDouble StrikeDouble StrikeAttack, Melee
    Mana Cost: 5
    Cast Time: 1.00 sec
    Drop Level: 1Performs two fast attacks on target enemy with your main hand melee weapon.Per 1% Quality:
    0.5% increased Attack Speed
    Deals (70-96.6)% of Base Attack DamagePlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Double Strike skill icon.png
    Double Strike inventory icon.png
    : Causes two hits per attack, only uses main hand when dual-wielding.
  • Cyclone inventory icon.pngCycloneCycloneAttack, AoE, Movement, Melee
    Mana Cost: 12
    Cast Time: 1.00 sec
    Drop Level: 28
    Requires Level 28
    Damage enemies around you, then perform a spinning series of attacks as you travel to a target location.Per 1% Quality:
    0.5% increased Area of Effect radius
    Deals (45-56.4)% of Base Attack Damage
    50% more Attack Speed
    30% less Movement Speed
    First Hit deals 50% less Damage
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Cyclone skill icon.png
    Cyclone inventory icon.png
    : Causes staggered hits rapidly.

Minions generally have poor critical strike capabilities, so critical strike supports are not as effective as they are with projectile spells. Good attack supports include:

  • Faster Attacks Support inventory icon.pngFaster Attacks SupportFaster Attacks SupportAttack, Support
    Icon: A
    Mana Multiplier: 115%
    Drop Level: 18
    Requires Level 18
    Per 1% Quality:
    0.5% increased Attack Speed
    (25-44)% increased Attack SpeedThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Faster Attacks Support inventory icon.png
  • Melee Splash Support inventory icon.pngMelee Splash SupportMelee Splash SupportSupport, Melee, Attack, AoE
    Icon: S
    Radius: 14
    Mana Multiplier: 160%
    Drop Level: 8
    Requires Level 8
    Per 1% Quality:
    0.5% increased Area of Effect radius
    (35-26)% less Damage to other targets
    (0-19)% more Melee Splash Radius
    Single-target Melee attacks deal Splash Damage to surrounding targets
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Melee Splash Support inventory icon.png
    : While it does not increase procs much due to the splash happening on a single frame, it greatly improves minion effectiveness.
  • Multistrike Support inventory icon.pngMultistrike SupportMultistrike SupportAttack, Melee, Support
    Icon: 3
    Mana Multiplier: 180%
    Drop Level: 38
    Requires Level 38
    Per 1% Quality:
    0.5% increased Melee Physical Damage
    Supported Melee Attacks Repeat 2 additional times
    (75-94)% more Melee Attack Speed
    30% less Attack Damage
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Multistrike Support inventory icon.png
    : For Melee attacks.
  • Additional Accuracy Support inventory icon.pngAdditional Accuracy SupportAdditional Accuracy SupportAttack, Support
    Icon: a
    Drop Level: 8
    Requires Level 8
    Per 1% Quality:
    1% increased Accuracy Rating
    +(74-1034) to Accuracy RatingThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Additional Accuracy Support inventory icon.png
    : Improves minion accuracy greatly, removes the need for accuracy on gear.
  • Since patch 2.0.0, increasing gem quality on Additional Accuracy Support inventory icon.pngAdditional Accuracy SupportAdditional Accuracy SupportAttack, Support
    Icon: a
    Drop Level: 8
    Requires Level 8
    Per 1% Quality:
    1% increased Accuracy Rating
    +(74-1034) to Accuracy RatingThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Additional Accuracy Support inventory icon.png
    no longer grants 1% increased chance of critical strike per 1% gem quality, and instead gives a simple 1% increased accuracy per 1% gem quality. Accuracy is a desirable stat, as one cannot crit what they cannot actually hit. However, the loss of the critical strike stat granted from gem quality means this is no longer a top-tier supporting gem choice. Losing the critical strike chance affects not only the minion gem in the link; as mentioned minions have poor critical strike capabilities, and were only the minion affected there would be no noticable difference after patch 2.0.0. Of course, this is not the case, as the critical strike chance also affects the attack you are using to proc CoC (the 'trigger' spell), and any other spells to be cast on critical strike (the 'triggered' spells) in the link. This essentially results in less CoC procs overall, less damage from your trigger spell, and less critical hits from your triggered spells as well. This triple-whammy means that Additional Accuracy Support is no longer the top-tier option that it once was, with or without an attached minion and minion-buffing support gems. When considering only the minion, and ignoring any of the triggering/triggered spells & CoC proc rate, the golem/minion is likely perform better with a Faster Attacks Support instead of Additional Accuracy Support; minions will miss more, but making far more attacks per measurement of time. No longer recommended in a CoC link since patch 2.0.0 except to fill in accuracy you desperately need due to poor passive tree and/or gear options.

Most minions are severely capped in number and thus do not benefit much from the high proc rate of Cast On Critical Strike. However, there is one that works well:

  • Summon Raging Spirit inventory icon.pngSummon Raging SpiritSummon Raging SpiritSpell, Minion, Duration, Fire
    Mana Cost: (4 to 12)
    Cast Time: 0.50 sec
    Drop Level: 4
    Requires Level 4
    Summons a short-lived flaming skull that rushes at nearby enemies and attacks them rapidly. Enemies will not directly engage these spirits, and can pass through them.Per 1% Quality:
    1% increased Minion Movement Speed
    Base duration is 5 seconds
    Can summon up to 20 Raging Spirits at a time
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Summon Raging Spirit skill icon.png
    Summon Raging Spirit inventory icon.png

Passives and gear

Since "double-dipping" on support gems is key to an effective Cast On Critical Strike setup, having a 5- or 6-link is more important than it is for most builds.

Unlike conventional attack builds, attack damage is not necessary on passives or gear, though it can be helpful in situations where the linked spells are less effective. Attack speed and critical strike chance are the two essential statistics.

Some base item types tend to have better critical hits per second than others:

  1. Wands
  2. Claws, Daggers
  3. Sceptres, Thrusting Swords
  4. Bows, Staves, 1H Swords

Possibly good uniques to use include:

Item Perfect crits/s
Death's Harp inventory icon.pngDeath's HarpDeath's Harp
Death Bow
Bows
Physical Damage: (40 to 45)(106 to 119.25)
Critical Strike Chance: (6.50% to 7.50%)
Attacks per Second: 1.32
Weapon Range: 120
Requires Level 32, 107 Dex(30-50)% increased Critical Strike Chance(100-125)% increased Physical Damage
10% increased Attack Speed
+150% to Global Critical Strike Multiplier
Adds an additional Arrow
The mournful music of the strings,
The creaking arch, the arrow sings.
A choking cry, a rattled breath,
The Reaper's Song, the Harp of Death.
Death's Harp inventory icon.png
9.08%
Doomfletch inventory icon.pngDoomfletchDoomfletch
Royal Bow
Bows
Physical Damage: (18 to 22)(57 to 61)
Critical Strike Chance: (6.50% to 7.00%)
Attacks per Second: (1.59 to 1.65)
Weapon Range: 120
Requires Level 28, 95 Dex(6-12)% increased Elemental Damage with WeaponsAdds (8-12) to (16-20) Physical Damage
(10-14)% increased Attack Speed
(30-40)% increased Critical Strike Chance
60% increased Mana Regeneration Rate
Gain 110% of Bow Physical Damage as Extra Damage of an Element
"Toasted or frozen
Or twitching in the light
I'm not fussy
And neither is Death."
- Koralus Doomfletch
Doomfletch inventory icon.png
11.17%
Quill Rain inventory icon.pngQuill RainQuill Rain
Short Bow
Bows
Physical Damage: 616
Critical Strike Chance: 5.00%
Attacks per Second: 3.00
Weapon Range: 120
Requires Level 5, 26 Dex+(10-20) to Dexterity
100% increased Attack Speed
+(25-50) to Accuracy Rating
(50-100)% increased Projectile Speed
50% less Weapon Damage
"The rain of a thousand quills that whittle
present into past, life into death."
- Rigwald of the Ezomytes
Quill Rain inventory icon.png
15.50%
Windripper inventory icon.pngWindripperWindripper
Imperial Bow
Bows
Physical Damage: 1978
Elemental Damage: (32 to 40)–(48 to 60) 1–(80 to 100)
Critical Strike Chance: (8.00% to 9.00%)
Attacks per Second: (1.59 to 1.67)
Weapon Range: 120
Requires Level 66, 212 Dex(6-12)% increased Elemental Damage with WeaponsAdds (32-40) to (48-60) Cold Damage
Adds 1 to (80-100) Lightning Damage
(10-15)% increased Attack Speed
(60-80)% increased Critical Strike Chance
15% increased Quantity of Items Dropped by Slain Frozen Enemies
30% increased Rarity of Items Dropped by Slain Shocked Enemies
It hunts; as silent as falling snow, as deadly as the tempest.
Windripper inventory icon.png
17.25%
Mortem Morsu inventory icon.pngMortem MorsuMortem Morsu
Fright Claw
Claws
Physical Damage: (15.75 to 18)(64.75 to 74)
Critical Strike Chance: 7.88%
Attacks per Second: 1.80
Weapon Range: 9
Requires Level 34, 61 Dex, 61 Int2% of Physical Attack Damage Leeched as Life(75-100)% increased Physical Damage
20% increased Attack Speed
25% increased Critical Strike Chance
+40% to Global Critical Strike Multiplier
(10-20)% of Physical Damage Converted to Chaos Damage
Poisonous Hit
25% reduced Enemy Stun Threshold with this Weapon
Fear blisters the heart and thins the blood.
Fear squeezes lungs and sets the guts to fester.
Fear is the wound left untended.
Mortem Morsu inventory icon.png
13.16%
Bino's Kitchen Knife inventory icon.pngBino's Kitchen KnifeBino's Kitchen Knife
Slaughter Knife
Daggers
Physical Damage: (59 to 69)(198 to 218)
Critical Strike Chance: (9.24% to 9.90%)
Attacks per Second: 1.40
Weapon Range: 8
Requires Level 65, 81 Dex, 117 Int40% increased Global Critical Strike Chance30% increased Damage over Time
Adds (50-60) to (120-140) Physical Damage
(40-50)% increased Critical Strike Chance
+(15-25)% to Global Critical Strike Multiplier
+(8-12)% to Chaos Resistance
On Killing a Poisoned Enemy, nearby Enemies are Poisoned
and nearby Allies Regenerate 200 Life per second
Calling it poison would imply
that it was even edible.
Bino's Kitchen Knife inventory icon.png
14.28%
Ungil's Gauche inventory icon.pngUngil's GaucheUngil's Gauche
Boot Knife
Daggers
Physical Damage: (14.4 to 16)(54 to 60)
Elemental Damage: 3–30
Critical Strike Chance: 6.60%
Attacks per Second: 1.54
Weapon Range: 8
Requires Level 20, 31 Dex, 45 Int40% increased Global Critical Strike Chance12% additional Block Chance while Dual Wielding
(80-100)% increased Physical Damage
+(10-20) to Dexterity
Adds 3 to 30 Lightning Damage
10% increased Attack Speed
50% increased Global Critical Strike Chance
Unwieldy and garish became graceful
and deadly in Ungil's nimble hands.
Ungil's Gauche inventory icon.png
10.47%
Divinarius inventory icon.pngDivinariusDivinarius
Imperial Skean
Daggers
Physical Damage: 1769
Critical Strike Chance: 6.60%
Attacks per Second: 1.45
Weapon Range: 8
Drop Level: 71
Requires Level 66, 95 Dex, 131 Int
40% increased Global Critical Strike Chance(50-70)% increased Spell Damage
(80-100)% increased Critical Strike Chance for Spells
+10 Life gained on Kill
+5 Mana gained on Kill
10% increased Radius of Area Skills
Divine intervention feels better
when you do it yourself.
Divinarius inventory icon.png
10.47%
Brightbeak inventory icon.pngBrightbeakBrightbeak
War Hammer
One Hand Maces
Physical Damage: (16.5 to 19.25)(39 to 45.5)
Critical Strike Chance: 6.25%
Attacks per Second: 2.10
Weapon Range: 9
Requires Level 20, 71 Str20% increased Stun Duration on Enemies(50-75)% increased Physical Damage
50% increased Attack Speed
25% increased Critical Strike Chance
+(20-30)% to Fire Resistance
+(20-30)% to Lightning Resistance
"I know how to say 'faster' and 'attack' in Karui, Marak and Ezo."
- Voll of Thebrus
Brightbeak inventory icon.png
12.19%
Doryani's Catalyst inventory icon.pngDoryani's CatalystDoryani's Catalyst
Vaal Sceptre
Sceptres
Physical Damage: (96 to 116)(158 to 218)
Critical Strike Chance: 6.00%
Attacks per Second: (1.55 to 1.61)
Weapon Range: 9
Requires Level 75, 113 Str, 113 Int32% increased Elemental DamageSocketed Gems are Supported by level 20 Elemental Proliferation
Adds (65-85) to (100-160) Physical Damage
(11-15)% increased Attack Speed
(6-10)% increased Cast Speed
(30-40)% increased Global Critical Strike Chance
0.2% of Elemental Damage Leeched as Life
(80-100)% increased Elemental Damage
The result of the catalytic reaction would be either immortality for all,
or death for all. It was a risk Doryani was willing to take.
Doryani's Catalyst inventory icon.png
10.75%
Hegemony's Era inventory icon.pngHegemony's EraHegemony's Era
Judgement Staff
Staves
Physical Damage: (241 to 251)(303 to 333)
Critical Strike Chance: (7.92% to 8.58%)
Attacks per Second: (1.40 to 1.45)
Weapon Range: 11
Requires Level 68, 113 Str, 113 Int12% Chance to Block6% Chance to Block
Adds (180-190) to (190-220) Physical Damage
(12-16)% increased Attack Speed
(20-30)% increased Critical Strike Chance
+1 to Maximum Power Charges
10% chance to gain a Power Charge if you Knock an Enemy Back with Melee Damage
The right to rule demands mental acuity,
a strong arm,
And a tenacious sense of justice.
Hegemony's Era inventory icon.png
12.09%
Dreamfeather inventory icon.pngDreamfeatherDreamfeather
Eternal Sword
One Hand Swords
Physical Damage: (52 to 72)(107 to 122)
Critical Strike Chance: 5.00%
Attacks per Second: (1.80 to 1.88)
Weapon Range: 9
Requires Level 66, 104 Str, 122 Dex18% increased Accuracy RatingAdds (20-40) to (55-70) Physical Damage
(20-25)% increased Attack Speed
+(180-200) to Accuracy Rating
+(180-200) to Evasion Rating
3% increased Movement Speed
1% increased Attack Damage per 450 Evasion Rating
She dances a dance beneath the shade,
The twilight shroud her only blade,
Who now hears her feathersteps flowing?
Beneath the stars, the moondrops glowing.
Dreamfeather inventory icon.png
10.00%
Piscator's Vigil inventory icon.pngPiscator's VigilPiscator's Vigil
Tornado Wand
Wands
Critical Strike Chance: (9.60% to 10.40%)
Attacks per Second: (1.43 to 1.53)
Weapon Range: 120
Requires Level 65, 212 Int(35-39)% increased Spell DamageNo Physical Damage
(10-18)% increased Attack Speed
+(340-400) to Accuracy Rating
(20-30)% increased Critical Strike Chance
Attacks with this Weapon have (100-115)% increased Elemental Damage
"Stone still, amidst the reeds,
breath fogging in the iron cold air.
he sits, he waits, he watches.
A piscatorial vigil, sat by the river,
his cathedral, his patience his unanswered prayer."
- Jojoba Mansell, bard, angler, adventurer
Piscator's Vigil inventory icon.png
16.67%
Trypanon inventory icon.pngTrypanonTrypanon
Great Mallet
Two Hand Maces
Physical Damage: 3776
Critical Strike Chance: 100.00%
Attacks per Second: 0.62
Weapon Range: 11
Requires Level 40, 131 Str20% increased Stun Duration on Enemies50% reduced Attack Speed
All Attacks with this Weapon are Critical Strikes
"Though ingenius instruments have been found,
it seems surgery before thaumaturgy
was not so delicate."
- Icius Perandus, Antiquities Collection, Item 3546
Trypanon inventory icon.png
63.00%

Version history

Version Changes
2.4.0
  • For Cast on Critical Strike, Cast on Melee Kill Support inventory icon.pngCast on Melee Kill SupportCast on Melee Kill SupportSupport, Melee, Attack, Spell, Trigger
    Icon: &
    Mana Multiplier: 140%
    Can store 1 use(s)
    Cooldown Time: 0.25 sec
    Drop Level: 38
    Requires Level 38
    Per 1% Quality:
    0.5% increased Damage
    Supported Melee Attacks will Cast a Supported Spell on Kill
    Supported Triggered Spells have (20-39)% more Spell Damage
    You cannot Cast Supported Spells directly
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    Cast on Melee Kill Support inventory icon.png
    , Mjölner inventory icon.pngMjölnerMjölner
    Gavel
    One Hand Maces
    Physical Damage: (75.6 to 92.4)(138.6 to 169.4)
    Critical Strike Chance: 5.00%
    Attacks per Second: 1.15
    Weapon Range: 9
    Requires Level 60, 412 Str, 300 Int40% increased Stun Duration on Enemies(80-120)% increased Physical Damage
    Skills Chain +1 times
    (30-40)% increased Lightning Damage with Weapons
    +200 Strength Requirement
    +300 Intelligence Requirement
    Cast a Socketed Lightning Spell on Hit
    Look the storm in the eye and you will have its respect.
    Mjölner inventory icon.png
    and Cospri's Malice inventory icon.pngCospri's MaliceCospri's Malice
    Jewelled Foil
    Thrusting One Hand Swords
    Elemental Damage: (80 to 100)–(160 to 200)
    Critical Strike Chance: 5.50%
    Attacks per Second: (1.73 to 1.82)
    Weapon Range: 12
    Requires Level 68, 212 Dex, 257 Int+30% to Global Critical Strike MultiplierNo Physical Damage
    Adds (80-100) to (160-200) Cold Damage
    Adds (40-60) to (90-110) Cold Damage to Spells
    (8-14)% increased Attack Speed
    +257 Intelligence Requirement
    60% increased Critical Strike Chance against Chilled Enemies
    Cast a Socketed Cold Spell on Melee Critical Strike
    Breathe deep, my child.
    Let the frigid air engulf your soul.
    Embrace the eternal cold,
    And it will embrace you back.
    Cospri's Malice inventory icon.png
    , only one skill can be triggered per trigger event.
  • The spell that is triggered is determined based on the order in which it is socketed, and will cast supported spells in sequence, even across multiple attacks. These items and skills also have cooldowns which limit how often a skill is cast.
  • These cooldowns apply per-triggered-skill, rather than applying to the trigger gem itself.
  • Cast on Critical Strike now has a 500ms cooldown, and will now only trigger one spell per frame when you critically strike. It now has 100% chance to trigger casts when you critically strike. It now has 20% more spell damage at level 1, tapered up to 39% at level 20 (1% per level).
1.3.0
  • Cast on Critical Strike's cooldown has been increased from 0.01 seconds to 0.05 seconds.
1.2.0
  • The chance to cast has been reduced by a flat 20% at all levels.
1.0.5
  • Cast on Critical Strike now has a 10 millisecond cooldown. The chance to cast supported skills has been increased by a flat 20%.
1.0.0e
  • The Cast on Crit support gem has been renamed to Cast on Critical Strike
1.0.0
  • Cast on Crit has been added to the game.