|gem_description = 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.
|mana_cost=
|active_skill_name = Caustic Arrow
|required_level=2
|item_class_id_restriction = Bow
|description=Fires an arrow which explodes in a cloud of poison. Enemies who enter the cloud are poisoned for a short time, taking chaos damage. Your arrows themselves also add additional chaos damage.
|projectile_speed = 3260
|modifier1=x% Physical Damage added as Chaos Damage
|skill_id = PoisonArrow
|modifier2=Base duration is x seconds
|cast_time = 1.0
|modifier3=Poisoned enemies take (2.3 to x) Chaos Damage per second
|required_level = 1
|modifier4=
|quality_type1_weight = 1
|modifier5=
|quality_type1_stat_text = +(0.01-0.2) metres to radius
|stat_text = Deals (8.8-1927.1) Base Chaos Damage per second<br>Base duration is 2.00 seconds<br>Modifiers to Projectile Damage apply to this Skill's Damage Over Time effect<br>+(0-0.6) metres to radius<br>60% of Physical Damage Converted to Chaos Damage
|level1 = True
|level1_level_requirement = 1
|level1_cost_amounts = 6
|level1_damage_effectiveness = 55
|level1_damage_multiplier = 55
|level1_stat_text = Deals 8.8 Base Chaos Damage per second
''Borrowing a bit of toxic chemistry from the secretive Oriath Necromancers guild, a skilled archer infuses their arrowhead with a wicked venom. Once enchanted, the arrow will explode violently when it impacts a target, showering both foes and the surrounding area with a cloud of choking death. Anything living caught in the cloud will suffocate quickly, suffering heavy chaos damage until they move far away.''
'''Caustic Arrow''' is a [[bow]] [[attack]] that fires an arrow dealing [[chaos damage]] and spreading [[caustic ground]]. Enemies standing within it receive a [[debuff]] that deals [[chaos]] [[damage over time]]. Caustic ground does not [[poison]] and is therefore not affected by poison-related [[modifier]]s.
==Skill Functions and Interactions==
==Skill functions and interactions==
AoE: [[Concentrated Effect|Concentrate Area of Effect]] will not increase the life degeneration of the Poison Arrow debuff. It will only decrease the area of the skill.
* Caustic Arrow will explode upon reaching the targeted location or [[hit]]ting a [[monster]] or obstacle.
Debuff: A Poison Arrow cloud causes a debuff to any enemy that enters its AoE. This debuff will cause [[chaos damage]] life degen until the debuff timer runs out. The timer will reset if an enemy is still inside the poison cloud.
* '''Multiple projectiles''': Firing additional [[projectile]]s can spread caustic ground over a wider area, but the damage over time from overlapping caustic ground does not stack.
[[Skill Duration|Duration]]: Skill Duration supports and passives will increase both the duration of the poison cloud and the duration of the Damage over Time debuff. Buff/Debuff duration passives will increase only the debuff duration.
* '''[[Pierce]]/[[Chain]]/[[Fork]]''': Each time Caustic Arrow hits an enemy, caustic ground is created. This means that a piercing/chaining/forking Caustic Arrow projectile can spread caustic ground multiple times.
Explosive Projectile: Poison Arrow will explode either at the specified location or on the first monster or obstacle encountered. If it hits an enemy, it will deal additional chaos damage based on your weapon damage. Wherever it explodes, it will leave a poison cloud that causes a debuff.
* '''Projectile Damage''': Caustic Arrow's inherent modifier {{c|mod|Modifiers to Projectile Damage apply to this Skill's Damage Over Time effect}} causes projectile damage modifiers to affect both the initial hit and caustic ground.
**For example, {{il|Greater Multiple Projectiles}} will reduce the damage of caustic arrow's initial hit and the resulting caustic ground.
Multiple Projectiles: Additional projectiles added will cause additional poison clouds, but multiple clouds will not cause additional debuffs.
* '''Concentrated Effect''': {{il|Concentrated Effect Support}} 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.<ref name="ConcEffect"/>
Piercing: [[Pierce|Piercing]] Poison Arrow Projectiles will cause additional clouds each time they hit and will receive the chaos damage bonus any time they impact an enemy, but multiple clouds will not cause additional debuffs.
* '''[[Point Blank]]''': Point Blank does not affect the damage from caustic ground because it only affects projectile attack damage.<ref name="PointBlank"/>
Ranged attack totem: Poison Arrow can't be supported by a totem.
* '''[[Iron Grip]]''': The strength bonus from Iron Grip does not affect the damage from caustic ground. This is because caustic ground is not an attack and does not apply physical damage.
**Notably, The increased projectile damage portion of the {{il|Iron Grip Support}} will increase the damage from caustic ground, but the strength bonus the support gem shares with the keystone will not apply.
==Gem Leveling==
* '''[[Accuracy]]''': The initial projectile attack is subject to [[accuracy]] and can miss. However, the explosion will spread caustic ground and do damage regardless of whether the projectile attack hits or misses. Piercing Caustic Arrow will not spread caustic ground if it misses.
{{GemLevelTable
| dex = yes
* '''[[Duration]]''': {{c|mod|Increased Duration}} will affect the caustic ground duration.
| c1 = Mana<br/>Cost
| c2 = {{Abbr|Added<br/>Damage|% of Physical Damage added as Chaos Damage}}
* '''[[Culling strike]]''':
| c3 = {{Abbr|Duration|Base Duration in Seconds}}
**The initial hit from a caustic arrow projectile can cull.
| c4 = {{Abbr|Cloud<br/>Damage|Poison Cloud Chaos Damage per Second}}
**Since caustic ground does not hit, it cannot cull.
* '''[[Curse]]s''':
**{{il|Sniper's Mark}} will increase the damage of the initial hit, but not the resulting caustic ground since caustic ground does not hit and is not a projectile.
**{{il|Despair}} will increase the damage of both the initial hit and the caustic ground damage over time.
==Gem level progression==
{{Skill progression
|c1_abbr = Chaos<br>Damage<br>per sec
|c1_header = Deals x Base Chaos Damage per second
|c1_pattern_extract = Deals (%d*%.*%d*) Base Chaos Damage per second
|c1_pattern_value = %s
|c2_abbr = Radius
|c2_header = +x metres to radius
|c2_pattern_extract = %+(%d+%.*%d*) metres? to radius
Each percentage of [[quality]] adds {{c|mod|+1% increased Area of Effect radius}}.
==Quest Reward==
{{Skill enchantment modifier list}}
This skill can be gained as a reward for finishing quest:
*[[Mercy Mission]] in Act 1 (Normal), by Shadow, Ranger and Duelist
*[[Breaking Some Eggs]] in Act 1 (Normal), by Shadow and Ranger
*[[Lost in Love]] in Act 3 (Cruel), by Ranger and Duelist
*[[The Caged Brute]] in Act 1 (Merciless), by Duelist
==Version History==
{{Alternate skill effect list}}
{{VersionHistoryTable}}
| align=center|[[Version 0.10.2|0.10.2]] ||
==Version history==
Caustic Arrow was previously known as "Poison Arrow".
{{Version history table header}}
{{Version history table row|3.23.0|
* Quality now provides +0-0.2 metres to radius, instead of 0-10% increased Area of Effect.
}}
{{Version history table row|3.12.4d|
* Fixed an issue which prevented the quality effect on Anomalous '''Caustic Arrow''' from working.
}}
{{Version history table row|3.12.0|
* Now has alternative quality:
:Anomalous {{c|mod|1% chance to inflict Withered on Hit}} (per 1% quality)
:Divergent {{c|mod|1% of Physical Damage Converted to Chaos Damage}} (per 1% quality)
}}
{{Version history table row|3.9.0|
* Now deals 8.8 base Chaos Damage per second at gem level 1 (from 7), up to 1927.1 at gem level 20 (from 1714.8).
* Now gains additional radius as the gem levels, up to +6 at gem level 20 (from +3).
}}
{{Version history table row|3.6.0|
* Caustic Arrow's hit now deals 30% less damage against players (previously had no penalty).
}}
{{Version history table row|3.0.0|
* Caustic Arrow's damage over time grows more quickly as it levels, up to 765 base Chaos damage per second at gem level 20 (up from 550.3). It is also now modified by projectile damage modifiers.
}}
{{Version history table row|2.6.0|
* Caustic Arrow gains 1 additional unit of radius every 5 levels.
* No longer gain increased area of effect radius.
}}
{{Version history table row|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.
}}
{{Version history table row|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.
}}
{{Version history table row|1.3.0|
* Poison Arrow can now damage totems.
}}
{{Version history table row|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.
}}
{{Version history table row|1.0.6|
* Poison Arrow's damage has been increased at higher levels. It now does roughly 35% more damage at gem level 15.
}}
{{Version history table row|1.0.3|
* Damage progression has been increased. It is now around 15% better at level 15 than it was in 1.0.2.
}}
{{Version history table row|1.0.2|
*Early levels of Poison Arrow have had their damage reduced by around 35%.
*Early levels of Poison Arrow have had their damage reduced by around 35%.
|-
}}
| align=center|[[Version 0.9.13|0.9.13]] ||
{{Version history table row|0.9.13|
* It now starts off around 85% stronger at level 1 and is about 1% weaker at level 15.
* It now starts off around 85% stronger at level 1 and is about 1% weaker at level 15.
|-
}}
| align=center|[[Version 0.9.12|0.9.12]] ||
{{Version history table row|0.9.12|
* Rebalanced its mana cost progression to reflect the fact that it does damage <br> in a comparable way to [[Spell]]s.
* Rebalanced its mana cost progression to reflect the fact that it does damage <br> in a comparable way to Spells.
|-
}}
| align=center|[[Version 0.9.9|0.9.9]] ||
{{Version history table row|0.9.9|
* The size of the Poison Arrow clouds now scale with their [[Area of Effect]] radius properly.
* The size of the Poison Arrow clouds now scale with their Area of Effect radius properly.
|-
}}
| align=center|[[Version 0.9.7|0.9.7]] ||
{{Version history table row|0.9.7|
* Improved the effects of Poison Arrow.
* Improved the effects of Poison Arrow.
|-
}}
| align=center|[[Version 0.9.5g|0.9.5g]] ||
{{Version history table row|0.9.5g|
* Fixed a bug where the Poison Arrow cloud would appear where you clicked <br>even if the arrow was stopped before then by a wall.
* Fixed a bug where the Poison Arrow cloud would appear where you clicked <br>even if the arrow was stopped before then by a wall.
|-
}}
| align=center|[[Version 0.9.5|0.9.5]] ||
{{Version history table row|0.9.5|
* Fixed Poison Arrow so that damage from the degeneration is scaled properly for PvP.
* Fixed Poison Arrow so that damage from the degeneration is scaled properly for PvP.
|-
}}
| align=center|[[Version 0.9.4|0.9.4]] ||
{{Version history table row|0.9.4|
* Increased the damage.
* Increased the damage.
|-
}}
| align=center|[[Version 0.9.2|0.9.2]] ||
{{Version history table row|0.9.2|
* Poison Arrow does more damage at higher levels than before.
* Poison Arrow does more damage at higher levels than before.
|}
}}
{{Version history table row|0.8.7|
* Poison Arrow does additional chaos damage on the actual arrow itself now, in addition to the cloud damage.
}}
{{Version history table row|0.8.6|
* Fixed a bug where a Poison Arrow cloud would persist forever if its owner left the instance.
}}
{{Version history table row|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]])
}}
{{Version history table end}}
==References==
{{reflist|refs=
<ref name="ConcEffect">{{cite web|author=Daniel_GGG|date=3 December 2013 14:05|title=Bug: Poison Arrow Skill not working with Concentrated Effect Support Gem|url=http://www.pathofexile.com/forum/view-thread/659839/page/1#p5838437|publisher=Path of Exile Forum|accessdate=December 18, 2013}}</ref>
<ref name="PointBlank">{{cite web|author=Daniel_GGG|date=January 5, 2014 12:10|title=Point blank and poison arrow|url=http://www.pathofexile.com/forum/view-thread/741503/page/1|publisher=Path of Exile Forum|accessdate=May 13, 2014 }}</ref>
<ref name="ProjectileWeakness">{{cite web|author=Mark_GGG|date=August, 2016|title=Verify confused about projectile weakness double dipping with poison.|url=https://www.reddit.com/r/pathofexile/comments/4usc5j/verify_confused_about_projectile_weakness_double/d5tvzp6/|publisher=Path of Exile subreddit|accessdate=December 16, 2016 }}</ref>
Caustic ArrowAttack, Projectile, AoE, Duration, Chaos, Bow Level: (1-20) Cost: (6-10) Mana Attack Damage: (55-64)% of base Effectiveness of Added Damage: (55-64)% Projectile Speed: 3260 AoE Radius: 20Fires 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.Deals (8.8-1927.1) Base Chaos Damage per second Base duration is 2.00 seconds Modifiers to Projectile Damage apply to this Skill's Damage Over Time effect +(0-0.6) metres to radius 60% of Physical Damage Converted to Chaos Damage
Additional Effects From 1-20% Quality: +(0.01-0.2) metres to radiusPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.
Caustic Arrow will explode upon reaching the targeted location or hitting a monster or obstacle.
Multiple projectiles: Firing additional projectiles can spread caustic ground over a wider area, but the damage over time from overlapping caustic ground does not stack.
Pierce/Chain/Fork: Each time Caustic Arrow hits an enemy, caustic ground is created. This means that a piercing/chaining/forking Caustic Arrow projectile can spread caustic ground multiple times.
Projectile Damage: Caustic Arrow's inherent modifier Modifiers to Projectile Damage apply to this Skill's Damage Over Time effect causes projectile damage modifiers to affect both the initial hit and caustic ground.
For example, Greater Multiple Projectiles SupportGreater Multiple Projectiles SupportSupport, Projectile Icon: P Level: (1-20) Cost & Reservation Multiplier: 150%Requires Level 38Supports projectile skills.Supported Skills deal (35-26)% less Projectile Damage Supported Skills fire 4 additional Projectiles
Additional Effects From 1-20% Quality: Supported Skills deal (0.5-10)% increased Projectile DamageThis 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 Skill Gem you wish to augment. Right click to remove from a socket. will reduce the damage of caustic arrow's initial hit and the resulting caustic ground.
Concentrated Effect: Concentrated Effect SupportConcentrated Effect SupportSupport, AoE Icon: o Level: (1-20) Cost & Reservation Multiplier: 140%Requires Level 18Supports any skill with an area of effect, regardless of whether that skill deals damage.Supported Skills deal (25-39)% more Area Damage Supported Skills have 30% less Area of Effect
Additional Effects From 1-20% Quality: Supported Skills deal (0.5-10)% increased Area DamageThis 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 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 damage from caustic ground because it only affects projectile attack damage.[2]
Iron Grip: The strength bonus from Iron Grip does not affect the damage from caustic ground. This is because caustic ground is not an attack and does not apply physical damage.
Notably, The increased projectile damage portion of the Iron Grip SupportIron Grip SupportProjectile, Physical, Support Icon: i Level: (1-20) Cost & Reservation Multiplier: 110%Requires Level 18Supports attack skills that fire projectiles, making the increase to physical melee damage from strength also increase their physical projectile damage.Strength's Damage bonus applies to Projectile Attack Damage as well for Supported Skills Supported Skills deal (0-38)% increased Projectile Damage
Additional Effects From 1-20% Quality: Supported Skills deal (0.5-10)% increased Projectile DamageThis 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 Skill Gem you wish to augment. Right click to remove from a socket. will increase the damage from caustic ground, but the strength bonus the support gem shares with the keystone will not apply.
Accuracy: The initial projectile attack is subject to accuracy and can miss. However, the explosion will spread caustic ground and do damage regardless of whether the projectile attack hits or misses. Piercing Caustic Arrow will not spread caustic ground if it misses.
Duration: Increased Duration will affect the caustic ground duration.
Sniper's MarkSniper's MarkSpell, Curse, Mark Level: (1-20) Cost: (16-33) Mana Cast Time: 0.50 secRequires Level 4Curses a single enemy, increasing the damage they take from projectiles, and making projectiles split when hitting them, to hit other targets around them. You can only have one Mark at a time.Cursed enemies take (10-29)% increased Damage from Projectile Hits Projectiles which Hit Cursed Enemies Split towards 2 additional targets
Additional Effects From 1-20% Quality: Cursed enemies take (0.25-5)% increased Damage from Projectile HitsPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. will increase the damage of the initial hit, but not the resulting caustic ground since caustic ground does not hit and is not a projectile.
DespairDespairSpell, AoE, Duration, Chaos, Curse, Hex Level: (1-20) Cost: (16-33) Mana Cast Time: 0.50 sec AoE Radius: 22Requires Level 24Curses all targets in an area, lowering their chaos resistance.Base duration is (8.00-11.80) seconds +(0-1) metre to radius Cursed enemies have -(15-30)% to Chaos Resistance
Additional Effects From 1-20% Quality: (0.5-10)% increased Effect of CursePlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. will increase the damage of both the initial hit and the caustic ground damage over time.
Gem level progression
Level
Mana Cost
Damage Effectiveness
Attack Damage
Chaos Damage per sec
Radius
Exp.
Total Exp.
1
1
0
6
55%
55%
8.8
N/A
0
0
2
2
0
6
55%
55.5%
10.1
N/A
70
70
3
4
16
6
56%
56%
13.1
+0.1m
308
378
4
7
22
6
56%
56.5%
18.4
+0.1m
1554
1932
5
11
31
7
57%
57%
27.8
+0.1m
6667
8599
6
16
41
7
57%
57.5%
44
+0.2m
26047
34646
7
20
50
7
58%
58%
61.9
+0.2m
49725
84371
8
24
58
7
58%
58.5%
85.4
+0.2m
95714
180085
9
28
67
8
59%
59%
116.2
+0.3m
169595
349680
10
32
75
8
59%
59.5%
156.3
+0.3m
283759
633439
11
36
83
8
60%
59.9%
208.5
+0.3m
453996
1087435
12
40
92
8
60%
60.4%
275.9
+0.3m
703128
1790563
13
44
100
9
61%
60.9%
362.7
+0.4m
1061223
2851786
14
48
109
9
61%
61.4%
474.1
+0.4m
2065870
4917656
15
52
117
9
62%
61.9%
616.9
+0.4m
2507110
7424766
16
56
125
9
62%
62.4%
799.3
+0.5m
5798936
13223702
17
60
134
10
63%
62.9%
1031.8
+0.5m
15083919
28307621
18
64
142
10
63%
63.4%
1327.6
+0.5m
27792735
56100356
19
67
148
10
64%
63.9%
1600.8
+0.6m
43869739
99970095
20
70
155
10
64%
64.4%
1927.1
+0.6m
242081556
342051651
21
72
159
11
65%
64.9%
2179.2
+0.6m
N/A
N/A
22
74
N/A
11
65%
65.4%
2462.7
+0.7m
N/A
N/A
23
76
N/A
11
66%
65.9%
2781.5
+0.7m
N/A
N/A
24
78
N/A
11
66%
66.4%
3139.9
+0.7m
N/A
N/A
25
80
N/A
12
67%
66.9%
3542.6
+0.8m
N/A
N/A
26
82
N/A
12
67%
67.4%
3995
+0.8m
N/A
N/A
27
84
N/A
12
68%
67.9%
4503.1
+0.8m
N/A
N/A
28
86
N/A
12
68%
68.4%
5073.4
+0.9m
N/A
N/A
29
88
N/A
13
69%
68.9%
5713.4
+0.9m
N/A
N/A
30
90
N/A
13
69%
69.4%
6431.6
+0.9m
N/A
N/A
31
91
N/A
13
70%
69.8%
6822.8
+0.9m
N/A
N/A
32
92
N/A
13
70%
70.3%
7237.1
+1m
N/A
N/A
33
93
N/A
14
71%
70.8%
7675.8
+1m
N/A
N/A
34
94
N/A
14
71%
71.3%
8140.3
+1m
N/A
N/A
35
95
N/A
14
72%
71.8%
8632.2
+1.1m
N/A
N/A
36
96
N/A
14
72%
72.3%
9152.9
+1.1m
N/A
N/A
37
97
N/A
15
73%
72.8%
9704.1
+1.1m
N/A
N/A
38
98
N/A
15
73%
73.3%
10287.7
+1.2m
N/A
N/A
39
99
N/A
15
74%
73.8%
10905.4
+1.2m
N/A
N/A
40
100
N/A
15
74%
74.3%
11559.3
+1.2m
N/A
N/A
Gem quality
Type
Additional Effects per 1-20% Quality
Weight
Superior
+(0.01-0.2) metres to radius
1
Item acquisition
Caustic Arrow can drop anywhere.
Recipes
Caustic Arrow can be created from the following recipes:
Amount
Part
Description
Meta
3
The Bitter BlossomThe Bitter Blossom3Level 21 Chaos Gem Quality:+23% CorruptedThe pain you feel is of no consequence, it is evolution, to be made whole within something greater.
Random corruptedlevel 21 Chaos gem with 23% quality
A
6
The FoxThe Fox6Level 20 Gem"Masters of wit, strength and cunning. To survive the harsh winters, you must be like the fox." - Ezomyte Proverb
Random level 20 gem
A
3
Gemcutter's PromiseGemcutter's Promise3Gem Quality:+20%"I swore to use my position to help the people. What good is power when it just accumulates on the already-powerful?" - Erasmus, Imperial Gemcutter
Random gem with 20% quality
A
1
Gemcutter's IncubatorGemcutter's IncubatorStack Size: 10Adds an incubated Quality Gem item to an equippable item Item drops after killing {0} monstersRight click this item then left click an item to apply it. The Incubated item drops after killing a specific number of monsters.
Random gem with 1–20% quality
A
1
The VoidThe Void1Reach into the Void and claim your prize.
Random divination card set exchange
A
Quest reward
This item is given as a quest reward for the following quests:
Note that helmet enchantments are no longer obtainable since version 3.23.0 and can only be obtained in permanent leagues as already enchanted items from before this patch.
Caustic Arrow's damage over time grows more quickly as it levels, up to 765 base Chaos damage per second at gem level 20 (up from 550.3). It is also now modified by projectile damage modifiers.
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.
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)