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Caustic Arrow

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Caustic ArrowAttack, Projectile, AoE, Duration, Chaos, Bow
Radius: 20
Mana Cost: (6-10)
Cast Time: 1.00 sec
Damage Effectiveness: (55%-64%)
Projectile Speed: 3260
Fires an arrow which deals chaos damage in an area on impact, and spreads caustic ground. Enemies standing on the caustic ground take chaos damage over time.Per 1% Quality:
0.5% increased Area of Effect
Deals (55-64.4)% of Base Damage
Base duration is 2 seconds
Deals (7-1714.8) Base Chaos Damage per second
60% of Physical Damage Converted to Chaos Damage
Modifiers to Projectile Damage apply to this Skill's Damage Over Time effect
+(0-3) to radius
Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
Caustic Arrow skill icon.pngCaustic Arrow inventory icon.png
Acquisition
Level: 5
Purchase Costs
Normal1x Scroll of Wisdom
Sell Price
1x Scroll Fragment
Miscellaneous
Item class: Active Skill Gems
Metadata ID: Metadata/Items/Gems/SkillGemPoisonArrow

Caustic Arrow skill screenshot.jpg

Caustic Arrow is a bow attack that fires an arrow dealing chaos damage and exploding in a caustic cloud. Enemies standing within it receive a debuff that deals chaos damage over time. The caustic cloud does not poison and is therefore not affected by poison-related modifiers.

Skill functions and interactions

  • Caustic Arrow will explode either at the targeted location or on the first monster or obstacle it hits.
  • Multiple projectiles: additional projectiles added will cause additional caustic clouds, but debuffs from multiple clouds do not stack.
  • Piercing: piercing Caustic Arrow projectiles will cause additional clouds each time they hit and will receive the chaos damage bonus any time they impact an enemy.
  • Projectile damage: passive nodes and gems (such as Slower Projectiles SupportSlower Projectiles SupportSupport, Projectile
    Icon: J
    Mana Multiplier: 140%
    Requires Level 31Supports projectile skills.Per 1% Quality:
    Supported Skills deal 0.5% increased Projectile Damage
    Supported Skills have (30-49)% less Projectile Speed
    Supported Skills deal (20-29)% 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.
    ) that increase projectile damage will increase both the damage on hit and the area of effect damage.
  • Concentrated Effect: Concentrated Effect SupportConcentrated Effect SupportSupport, AoE
    Icon: o
    Mana Multiplier: 140%
    Requires Level 18Supports any skill with an area of effect, regardless of whether that skill deals damage.Per 1% Quality:
    Supported Skills deal 0.5% increased Area Damage
    Supported Skills have 30% less Area of Effect
    Supported Skills deal (35-54)% 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.
    decreases the size of the AoE and increase its damage. However, due to the nature of the skill and the wording of its modifiers, the damage increase will not appear on the tooltip.[1]
  • Point Blank: Point Blank does not affect the caustic cloud damage, it only affects projectile attack damage.[2]
  • Iron Grip: The strength bonus from the Iron Grip keystone passive does not affect the caustic cloud damage because the cloud is not considered an attack nor is it based on physical damage. The increased projectile damage portion of the Iron Grip SupportIron Grip SupportProjectile, Support
    Icon: i
    Requires Level 18Supports attack skills that fire projectiles, making the increase to physical melee damage from strength also increase their physical projectile damage.Per 1% Quality:
    Supported Skills deal 0.5% increased Projectile Damage
    Strength's damage bonus applies to Projectile Attacks made with Supported Skills
    Supported Skills deal (0-38)% 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.
    will increase the cloud damage, but the strength bonus the support gem shares with the keystone will not apply.
  • Accuracy: The projectile attack is subject to accuracy and can miss. However, the explosion will create a caustic cloud and do damage regardless of whether the projectile attack hit or missed. Piercing Caustic Arrow will not create additional clouds if missed.
  • Duration: modifiers to duration will affect the duration of the caustic cloud.
  • Culling strike: The increased damage from Culling Strike SupportCulling Strike SupportSupport
    Icon: X
    Mana Multiplier: 110%
    Requires Level 18Supports any skill that hits enemies. If enemies are left below 10% of maximum life after being hit by these skills, they will be killed.Per 1% Quality:
    Supported Skills have 0.5% increased Attack Speed
    Supported Skills have 0.5% increased Cast Speed
    Kill Enemies that have 10% Life or lower when Hit by Supported Skills
    Supported Skills deal (0-38)% increased 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.
    applies to cloud damage, but the cloud does not kill enemies instantly when they have less than 10% life.
  • Curses: Projectile WeaknessProjectile WeaknessSpell, AoE, Duration, Curse
    Radius: 22
    Mana Cost: (24-50)
    Cast Time: 0.50 sec
    Requires Level 24Curses all targets in an area, making them easier to pierce and to knock back, and increasing the damage they take from projectiles.Per 1% Quality:
    Cursed enemies take 0.5% increased Damage from Projectile Hits
    Base duration is (9-10.9) seconds
    Projectiles Pierce Cursed Enemies
    Hits on Cursed Enemies have an additional 25% chance to Knockback
    Cursed enemies take (25-44)% increased Damage from Projectile Hits
    +(0-10) to radius
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Projectile Weakness skill icon.png
    requires the target to be hit. The caustic cloud won't be affected by it.[3] DespairDespairSpell, AoE, Duration, Curse, Chaos
    Radius: 22
    Mana Cost: (24-50)
    Cast Time: 0.50 sec
    Requires Level 24Curse all targets in an area, making them less resistant to chaos damage and causing them to take increased damage over time. Cursed enemies also take additional chaos damage when hit.Per 1% Quality:
    Cursed enemies take 0.5% increased Damage from Damage Over Time effects
    Base duration is (9-10.9) seconds
    Cursed enemies have -(20-29)% to Chaos Resistance
    Cursed enemies take (15-25)% increased Damage from Damage Over Time effects
    Adds (9-46) to (12-57) Chaos Damage to Hits against Cursed Enemies
    +(0-10) to radius
    Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
    Despair skill icon.png
    does affect the cloud.

Gem level progression

LevelLvl.dexterityMana
Cost
Damage
Effectiveness
Damage
Multiplier
Chaos
Damage
per sec
RadiusExp.Total Exp.
110655%55%7N/A00
220655%55.5%8.1N/A7070
3416656%56%10.4N/A308378
4722656%56.5%14.8N/A1,5541,932
51131757%57%22.4N/A6,6678,599
61641757%57.5%35.9126,04734,646
72050758%58%50.8149,72584,371
82458758%58.5%70.5195,714180,085
92867859%59%96.61169,595349,680
103275859%59.5%130.81283,759633,439
113683860%59.9%175.61453,9961,087,435
124092860%60.4%233.82703,1281,790,563
1344100961%60.9%309.421,061,2232,851,786
1448109961%61.4%407.222,065,8704,917,656
1552117962%61.9%533.222,507,1107,424,766
1656125962%62.4%695.425,798,93613,223,702
17601341063%62.9%903.4215,083,91928,307,621
18641421063%63.4%1170327,792,73556,100,356
19671481064%63.9%1417.5343,869,73999,970,095
20701551064%64.4%1714.83242,081,556342,051,651
21721591165%64.9%1945.43N/AN/A
2274N/A1165%65.4%2205.63N/AN/A
2376N/A1166%65.9%2499.23N/AN/A
2478N/A1166%66.4%2830.44N/AN/A
2580N/A1267%66.9%3203.74N/AN/A
2682N/A1267%67.4%3624.64N/AN/A
2784N/A1268%67.9%4098.74N/AN/A
2886N/A1268%68.4%4632.84N/AN/A
2988N/A1369%68.9%5234.24N/AN/A
3090N/A1369%69.4%5911.25N/AN/A
3191N/A1370%69.8%6280.95N/AN/A
3292N/A1370%70.3%6673.15N/AN/A
3393N/A1471%70.8%70895N/AN/A
3494N/A1471%71.3%7530.25N/AN/A
3595N/A1472%71.8%7998.15N/AN/A
3696N/A1472%72.3%8494.36N/AN/A
3797N/A1573%72.8%9020.56N/AN/A
3898N/A1573%73.3%9578.46N/AN/A
3999N/A1574%73.8%101706N/AN/A
40100N/A1574%74.3%10797.26N/AN/A

Item acquisition
Questionmark.png

Quest reward

This item is given as quest reward for the following quests:

Class →WitchShadowRangerDuelistMarauderTemplarScion
Quest ↓
Enemy at the Gate
Act 1

Vendor reward

This item can be bought at the listed npc vendors after completing the following quests:

Class →WitchShadowRangerDuelistMarauderTemplarScion
Quest ↓
Enemy at the Gate
Act 1
Nessa
A Fixture of Fate
Act 3
Siosa
Fallen from Grace
Act 6
Lilly Roth

Related helmet enchantments

The following helmet enchantments affect Caustic Arrow.

NameFor generated item/monster modifiers the minimum item/monster level respectively. Some generation types may not require this condition to be met, however item level restrictions may be raised to 80% of this value.Stats
EnchantmentCausticArrowDamage16625% increased Caustic Arrow Damage
EnchantmentCausticArrowDamage27540% increased Caustic Arrow Damage
EnchantmentCausticArrowDuration16620% increased Caustic Arrow Duration
EnchantmentCausticArrowDuration27530% increased Caustic Arrow Duration
EnchantmentCausticArrowRadius1668% increased Caustic Arrow Area of Effect
EnchantmentCausticArrowRadius27512% increased Caustic Arrow Area of Effect
EnchantmentCausticArrowWitherOnHit166Caustic Arrow has 14% chance to inflict Withered on Hit for 2 seconds base Duration
EnchantmentCausticArrowWitherOnHit275Caustic Arrow has 20% chance to inflict Withered on Hit for 2 seconds base Duration

Microtransactions

The list below shows microtransactions for Caustic Arrow.

ItemEffect(s)
Celestial Caustic Arrow
Celestial Caustic ArrowCaustic Arrow SkinYour Caustic Arrow becomes a Celestial Effect.
Your Caustic Arrow becomes a Celestial Effect.
Tentacle Caustic Arrow Effect
Tentacle Caustic Arrow EffectCaustic Arrow Skin
Stack Size: 20
Your Caustic Arrow becomes an area of ethereal purple tentacles.
Your Caustic Arrow becomes an area of ethereal purple tentacles.

Version history

Version Changes
2.6.0
  • Caustic Arrow gains 1 additional unit of radius every 5 levels.
  • No longer gain increased area of effect radius.
2.1.0
  • Poison Arrow has been renamed to Caustic Arrow as part of the poison changes. The damage of this skill has been increased by around 37% at level 1, but reduced by around 42% by level 20. This reduction is more than compensated for by supporting the skill with the new supports. Caustic Arrow's mana costs have been increased, from 5 to 8 at level one, and from 13 to 16 at level 20.
2.0.0
  • Reduced the mana cost across all levels.
  • Now grants 0.5% increased area of effect radius per 1% of quality (was 1% per 1% quality).
  • Damage increased by approximately 26% at gem level 20.
1.3.0
  • Poison Arrow can now damage totems.
1.1.2
  • Damage has been increased by 8% at level 1, scaling up to an increase of 75% at level 15 of the gem.
1.0.6
  • Poison Arrow's damage has been increased at higher levels. It now does roughly 35% more damage at gem level 15.
1.0.3
  • Damage progression has been increased. It is now around 15% better at level 15 than it was in 1.0.2.
1.0.2
  • Early levels of Poison Arrow have had their damage reduced by around 35%.
0.9.13
  • It now starts off around 85% stronger at level 1 and is about 1% weaker at level 15.
0.9.12
  • Rebalanced its mana cost progression to reflect the fact that it does damage
    in a comparable way to Spells.
0.9.9
  • The size of the Poison Arrow clouds now scale with their Area of Effect radius properly.
0.9.7
  • Improved the effects of Poison Arrow.
0.9.5g
  • Fixed a bug where the Poison Arrow cloud would appear where you clicked
    even if the arrow was stopped before then by a wall.
0.9.5
  • Fixed Poison Arrow so that damage from the degeneration is scaled properly for PvP.
0.9.4
  • Increased the damage.
0.9.2
  • Poison Arrow does more damage at higher levels than before.
0.8.7
  • Poison Arrow does additional chaos damage on the actual arrow itself now, in addition to the cloud damage.
0.8.5
  • Added new skill prototype: "Poison Arrow" (Fires an arrow which explodes in a cloud of poison. Enemies who enter the cloud are poisoned for a short time, taking chaos damage)

References

  1. Daniel_GGG (3 December 2013 14:05). "Bug: Poison Arrow Skill not working with Concentrated Effect Support Gem". Path of Exile Forum. Retrieved December 18, 2013‎.
  2. Daniel_GGG (January 5, 2014 12:10). "Point blank and poison arrow". Path of Exile Forum. Retrieved May 13, 2014‎.
  3. Mark_GGG (August, 2016). "Verify confused about projectile weakness double dipping with poison.". Path of Exile subreddit. Retrieved December 16, 2016.