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Arc

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ArcSpell, Chaining, Lightning
Mana Cost: (9 to 26)
Cast Time: 0.80 sec
Critical Strike Chance: 5.00%
Damage Effectiveness: 70%
Drop Level: 12
Requires Level 12
An arc of lightning stretches from the caster to a targeted nearby enemy and chains on to additional targets.Per 1% Quality:
0.5% chance to Shock enemies
Deals (2 to 47)-(35 to 886) Lightning Damage
10% chance to Shock enemies
Chain +(2 to 7) Times
Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
Arc skill icon.pngArc inventory icon.png

Arc skill screenshot.jpg

Arc is a lightning spell that creates a chaining pulse.

Skill Functions and Interactions

  • Since it is not a projectile, Arc cannot Pierce Support inventory icon.pngPierce SupportPierce SupportSupport, Projectile
    Icon: p
    Mana Multiplier: 110%
    Drop Level: 31
    Requires Level 31
    Per 1% Quality:
    0.5% increased Projectile Damage
    50% chance of Projectiles Piercing
    (10 to 29)% more Projectile Damage
    This is a Support Gem. It does not grant a bonus to your character, but 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
    or 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 to 11)% less Projectile Damage
    Projectiles Fork
    This is a Support Gem. It does not grant a bonus to your character, but 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
    , and it cannot be supported with Greater Multiple Projectiles Support inventory icon.pngGreaterGreater 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 to 26)% less Projectile Damage
    This is a Support Gem. It does not grant a bonus to your character, but 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
    or Lesser Multiple Projectiles Support inventory icon.pngLesserLesser Multiple Projectiles SupportSupport, Projectile
    Icon: l
    Mana Multiplier: 140%
    Drop Level: 8
    Requires Level 8
    Per 1% Quality:
    0.5% increased Attack Speed
    0.5% increased Cast Speed
    2 additional Projectiles
    (25 to 16)% less Projectile Damage
    This is a Support Gem. It does not grant a bonus to your character, but 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.
    Lesser Multiple Projectiles Support inventory icon.png
    Multiple Projectiles. Supporting Arc with 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 to 31)% less Damage
    This is a Support Gem. It does not grant a bonus to your character, but 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
    will result in additional chains.
  • Arc will chain to a random target within a specified radius centered on last target struck. Arc cannot chain back to the same target immediately, and must bounce one more time before chaining to the previous target.
  • Arc, when not cast at any enemy, will target the nearest one within the skill's range.

Gem level progression

LevelLvl.intelligenceMana
Cost
Lightning
Damage
# ChainsExp.Total Exp.
1123392–35200
21539102–44215,24915,249
31948113–58241,51756,766
42356124–76381,983138,749
52764135–973147,968286,717
63173146–1233250,557537,274
73581168–1543405,086942,360
838881610–1824447,7181,390,078
941941711–2144615,3182,005,396
10441001813–2504834,6392,840,035
11471061915–29241,570,7604,410,795
12501132018–34051,633,9876,044,782
13531192121–39552,151,0308,195,812
14561252224–45852,812,18911,008,001
15591322328–52955,099,36016,107,361
16621382432–61069,400,73125,508,092
17641422435–671615,273,36640,781,458
18661462539–736626,286,58267,068,040
19681512543–808662,890,590129,958,630
20701552647–8867212,046,017342,004,647
21721592651–9717N/AN/A
2274N/A2656–10647N/AN/A
2376N/A2761–11647N/AN/A
2478N/A2867–12748N/AN/A
2580N/A2973–13938N/AN/A
2682N/A3080–15238N/AN/A
2784N/A3088–16638N/AN/A
2886N/A3096–18169N/AN/A
2988N/A31104–19839N/AN/A
3090N/A32114–21639N/AN/A

Quest reward

This skill is given as quest reward for the following quests:
ClassMarauderTemplarWitchShadowRangerDuelistScion
Quest
The Siren's Cadence
Act 1
Normal
no
no
yes
no
no
no
no

Vendor reward

This skill can be bought at the listed npc vendors after completing the following quests:
ClassMarauderTemplarWitchShadowRangerDuelistScion
Quest
The Siren's Cadence
Act 1
Nessa

Cost:
Orb of Transmutation inventory icon.pngOrb of TransmutationOrb of TransmutationStack Size: 40Drop Level: 1Upgrades a normal item to a magic itemRight click this item then left click a normal item to apply it.
Shift click to unstack.
Orb of Transmutation inventory icon.png
no
yes
yes
yes
no
no
no

Version history

Version Changes
2.1.0
  • Damage increased by around 20% higher at level 20.
  • In addition to having more damage, Arc now increases in number of chains more often as it levels up. At level 20, it chains seven times. Previously this was five.
2.0.0
  • Damage reduced slightly at all levels. At player level 68, it should deal approximately 8% less damage.
1.2.0
  • We have reduced the damage by 15% at all levels.
  • Got +1% to critical hit chance bringing it to 5%
1.1.2
  • Arc inventory icon.pngArcArcSpell, Chaining, Lightning
    Mana Cost: (9 to 26)
    Cast Time: 0.80 sec
    Critical Strike Chance: 5.00%
    Damage Effectiveness: 70%
    Drop Level: 12
    Requires Level 12
    An arc of lightning stretches from the caster to a targeted nearby enemy and chains on to additional targets.Per 1% Quality:
    0.5% chance to Shock enemies
    Deals (2 to 47)-(35 to 886) Lightning Damage
    10% chance to Shock enemies
    Chain +(2 to 7) Times
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Arc skill icon.png
    Arc inventory icon.png
    and Vaal Arc inventory icon.pngVaal ArcVaal ArcVaal, Spell, Chaining, Lightning
    Souls per use: 32 (N) / 48 (C) / 64 (M)
    Can store 1 use(s)
    Cast Time: 0.80 sec
    Critical Strike Chance: 5.00%
    Damage Effectiveness: 80%
    Drop Level: 12
    Requires Level 12
    An arc of lightning stretches from the caster to a targeted nearby enemy and chains on to many additional targets.Per 1% Quality:
    1.5% increased Shock Duration on enemies
    Deals (2 to 49)-(35 to 938) Lightning Damage
    100% chance to Shock enemies
    Chain +40 Times
    Corrupted
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Vaal Arc skill icon.png
    Vaal Arc inventory icon.png
    have had their damage increased by 60%. Arc and Vaal Arc can now no longer chain back to the same target immediately, but must now bounce one more time. Arc now increases in chain counts as the gem increases in level.
1.0.0
  • Reduced the mana cost.
  • Damage has been increased by around 23%.
0.11.1
  • Spells with Damage Effectiveness no longer have their own damage affected by Damage Effectiveness.
    Damage values on these skills have been updated to reflect this.
0.9.13
  • Arc has been added to the game.