Caustic Arrow

Attack, Projectile, AoE, Duration, Chaos, Bow
Level: 1–20
Mana Cost: 6–10
Cast Time: 1 sec
Effectiveness of Added Damage: 55–64%
Radius: 20

Requires Level 1

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.

Deals (55–64.4)% of Base Attack Damage
+2 seconds to Base duration
Deals (8.8–1927.1) Base Chaos Damage per second
60% of Physical Damage Converted to Chaos Damage
+(0–6) to radius
Modifiers to Projectile Damage apply to this Skill's Damage Over Time effect

Additional Effects From Quality:
(0–10)% increased Area of Effect

Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.

poe.ninja	Caustic Arrow
BaseType	Caustic Arrow
Class	Active Skill Gems
Cost	Scroll of Wisdom x 1
Weapon	Bows
TargetTypes	Ground, Enemy
Type	Attack, ProjectileAttack, SkillCanMirageArcher, Projectile, SkillCanVolley, Area, Duration, SkillCanTrap, SkillCanMine, SkillCanTotem, DamageOverTime, ChaosSkill, Triggerable
IsActiveSkill	1
DefaultTxt	skill_stat_descriptions
GrantedEffectsID	503

Quality Gem /3

Type	Stats	Weight
Superior	(0–10)% increased Area of Effect	50
Anomalous	(0–20)% chance to inflict Withered for 2 seconds on Hit	100
Divergent	(0–20)% of Physical Damage Converted to Chaos Damage	100

Caustic Arrow /6

A projectile attack that creates a patch of caustic ground on hit which deals chaos damage over time to affected enemies.

Name	Show Full Descriptions
Pierce Support	Allows projectiles from Caustic Arrow to travel through more enemies, creating multiple patches of caustic ground, dealing damage to more enemies simultaneously.
Lesser Multiple Projectiles Support	Increases the amount of arrows Caustic Arrow fires, allowing it to cover a larger area by creating multiple patches of caustic ground at once. At later levels, obtain the Greater Multiple Projectiles Support gem to affect enemies in a larger area.
Mirage Archer Support	When Caustic Arrow hits an enemy, an apparition is created above you that fires a copy of Caustic Arrow at enemies, at a reduced rate and with less damage.
Vicious Projectiles Support	Greatly increases both the physical damage from hits and chaos damage over time component of Caustic Arrow.
Swift Affliction Support	Decreases the duration of Caustic Arrow's ground effect, but compensates for this by increasing damage over time dealt.
Void Manipulation Support	Grants more chaos damage but lowers the elemental damage of Caustic Arrow. The Caustic ground effect only deals chaos damage, so Void Manipulation gives more damage at no drawback.

Quest /2

Act	Quest Complete	NPC	Character
1	Enemy at the Gate	Quest Reward	Ranger
		Nessa	Duelist Ranger Shadow Scion

Implicit
skill_can_fire_arrows [1] Modifiers to Projectile Damage apply to this Skill's Damage Over Time effect visual_hit_effect_chaos_is_green [1]
+2 seconds to Base duration 60% of Physical Damage Converted to Chaos Damage

Level Effect /40

Level	Requires Level	Dexterity	Mana Cost	Base Damage	Deals 8.8 Base Chaos Damage per second	# to radius	Experience
1	1	10	6	55%	8.8	0	70
2	2	12	6	55.5%	10.1	0	308
3	4	16	6	56%	13.1	1	1,554
4	7	22	6	56.5%	18.4	1	6,667
5	11	31	7	57%	27.8	1	26,047
6	16	41	7	57.5%	44	2	49,725
7	20	50	7	58%	61.9	2	95,714
8	24	58	7	58.5%	85.4	2	169,595
9	28	67	8	59%	116.2	3	283,759
10	32	75	8	59.5%	156.4	3	453,996
11	36	83	8	59.9%	208.5	3	703,128
12	40	92	8	60.4%	275.9	3	1,061,223
13	44	100	9	60.9%	362.7	4	2,065,870
14	48	109	9	61.4%	474.1	4	2,507,110
15	52	117	9	61.9%	616.9	4	5,798,936
16	56	125	9	62.4%	799.3	5	15,083,919
17	60	134	10	62.9%	1031.9	5	27,792,735
18	64	142	10	63.4%	1327.6	5	43,869,739
19	67	148	10	63.9%	1600.8	6	242,081,556
20	70	155	10	64.4%	1927.1	6
21	72		11	64.9%	2179.2	6
22	74		11	65.4%	2462.7	7
23	76		11	65.9%	2781.5	7
24	78		11	66.4%	3139.9	7
25	80		12	66.9%	3542.6	8
26	82		12	67.4%	3995	8
27	84		12	67.9%	4503.1	8
28	86		12	68.4%	5073.4	9
29	88		13	68.9%	5713.5	9
30	90		13	69.4%	6431.6	9
31	91		13	69.8%	6822.8	9
32	92		13	70.3%	7237.1	10
33	93		14	70.8%	7675.8	10
34	94		14	71.3%	8140.3	10
35	95		14	71.8%	8632.2	11
36	96		14	72.3%	9152.9	11
37	97		15	72.8%	9704.2	11
38	98		15	73.3%	10287.7	12
39	99		15	73.8%	10905.4	12
40	100		15	74.3%	11559.3	12

Labyrinth Enchantment helmet /8

Level	Mod	Drop Rate
The Merciless Labyrinth	25% increased Caustic Arrow Damage	helmet(12.5%)
The Eternal Labyrinth	40% increased Caustic Arrow Damage	helmet(12.5%)
The Merciless Labyrinth	20% increased Caustic Arrow Duration	helmet(12.5%)
The Eternal Labyrinth	30% increased Caustic Arrow Duration	helmet(12.5%)
The Merciless Labyrinth	16% increased Caustic Arrow Area of Effect	helmet(12.5%)
The Eternal Labyrinth	24% increased Caustic Arrow Area of Effect	helmet(12.5%)
The Merciless Labyrinth	Caustic Arrow has 14% chance to inflict Withered on Hit for 2 seconds base Duration	helmet(12.5%)
The Eternal Labyrinth	Caustic Arrow has 20% chance to inflict Withered on Hit for 2 seconds base Duration	helmet(12.5%)

Microtransactions /2

Icon	Name
	Tentacle Caustic Arrow Effect Stack Size: 1 / 20 Your Caustic Arrow becomes an area of ethereal purple tentacles.
	Celestial Caustic Arrow Effect Your Caustic Arrow becomes a Celestial Effect.

Supported By /106

Active Type: Attack, ProjectileAttack, SkillCanMirageArcher, Projectile, SkillCanVolley, Area, Duration, SkillCanTrap, SkillCanMine, SkillCanTotem, DamageOverTime, ChaosSkill, Triggerable

Support Gem	ActiveType
Added Fire Damage Support	Hit, Attack
Faster Attacks Support	Attack, Type56
Greater Multiple Projectiles Support	Projectile, Type54, Type56, Type73
Lesser Multiple Projectiles Support	Projectile, Type54, Type56, Type73
Greater Volley Support	SkillCanVolley
Faster Projectiles Support	Projectile, ProjectileDamage, Type54, Type56
Added Cold Damage Support	Attack, Hit
Additional Accuracy Support	Attack, Type56
Increased Area of Effect Support	Area, CreateMinion, Type53
Added Lightning Damage Support	Attack, Hit
Increased Critical Strikes Support	Hit, Attack
Increased Critical Damage Support	Hit, Attack
Knockback Support	Hit, Attack
Life Leech Support	Hit, Attack
Mana Leech Support	Attack
Added Chaos Damage Support	Hit, Attack
Stun Support	Hit, Attack
Pierce Support	Projectile, Type54, Type56
Trap Support	SkillCanTrap
Item Rarity Support	Hit, Attack, DamageOverTime
Concentrated Effect Support	Area, CreateMinion, Type53
Increased Duration Support	Duration, Type55
Cold to Fire Support	Hit, Attack
Combustion Support	Hit, Attack
Elemental Damage with Attacks Support	Attack, Type56
Life Gain on Hit Support	Attack, Type56
Elemental Proliferation Support	Hit, Attack, CauseElementalStatus
Culling Strike Support	Hit, Attack
Point Blank Support	ProjectileAttack, Type56
Iron Grip Support	ProjectileAttack, Type56
Damage on Full Life Support	Attack
Blastchain Mine Support	SkillCanMine
Chance to Flee Support	Attack, Hit
Blind Support	Hit, Attack
Ballista Totem Support	Attack, SkillCanTotem, AND
Fire Penetration Support	Hit, Attack
Cold Penetration Support	Hit, Attack
Lightning Penetration Support	Hit, Attack
Elemental Penetration Support	Hit, Attack
Chain Support	Chaining, Projectile, Type54, Type56, Type97
Fork Support	Projectile, Type54, Type56
Power Charge On Critical Support	Hit, Attack
Burning Damage Support	Hit, Attack, CausesBurning
Hextouch Support	Attack, Hit
Cast On Critical Strike Support	Attack
Slower Projectiles Support	Projectile, ProjectileDamage, Type54, Type56
Less Duration Support	Duration, Type55
Vicious Projectiles Support	ProjectileAttack, Type56
Block Chance Reduction Support	Hit, Attack
Physical to Lightning Support	Hit, Attack
Ice Bite Support	Hit, Attack
Hypothermia Support	Hit, Attack, DamageOverTime
Innervate Support	Hit, Attack
Poison Support	Hit, Attack
Void Manipulation Support	Hit, Attack, DamageOverTime
Controlled Destruction Support	Hit, Attack, Type59
Swift Affliction Support	Duration, Type55, Hit, Attack
Elemental Focus Support	Hit, Attack, CausesBurning, NonHitChill
Ignite Proliferation Support	Hit, Attack
Chance to Bleed Support	Attack
Lesser Poison Support	Hit, Attack
Deadly Ailments Support	Hit, Attack
Decay Support	Hit, Attack
Efficacy Support	Hit, Attack, Type59, Duration, Type55, DamageOverTime
Vile Toxins Support	Hit, Attack
Maim Support	Attack, Maims
Immolate Support	Hit, Attack
Unbound Ailments Support	Hit, Attack, CauseElementalStatus
Brutality Support	Hit, Attack
Onslaught Support	Hit, Attack
Volley Support	SkillCanVolley
Summon Phantasm Support	Attack, Hit, CreatesMinion
Mirage Archer Support	SkillCanMirageArcher
Withering Touch Support	Attack
Bonechill Support	Attack, Hit, NonHitChill, ChillingArea
Energy Leech Support	Hit, Attack
Impale Support	Attack
Nightblade Support	Attack
High-Impact Mine Support	SkillCanMine
Arrow Nova Support	Projectile, Type54, OR, ProjectileAttack, Type56, OR, AND, SkillCanVolley, AND
Barrage Support	Projectile, Type54, OR, Type73, OR, ProjectileAttack, Type56, OR, AND
Awakened Added Fire Damage Support	Hit, Attack
Awakened Brutality Support	Hit, Attack
Awakened Burning Damage Support	Hit, Attack, CausesBurning
Awakened Elemental Damage with Attacks Support	Attack, Type56
Awakened Fire Penetration Support	Hit, Attack
Awakened Added Cold Damage Support	Attack, Hit
Awakened Arrow Nova Support	Projectile, Type54, OR, ProjectileAttack, Type56, OR, AND, SkillCanVolley, AND
Awakened Cast On Critical Strike Support	Attack
Awakened Chain Support	Chaining, Projectile, Type54, Type56, Type97
Awakened Cold Penetration Support	Hit, Attack
Awakened Deadly Ailments Support	Hit, Attack
Awakened Fork Support	Projectile, Type54, Type56
Awakened Greater Multiple Projectiles Support	Projectile, Type54, Type56, Type73
Awakened Swift Affliction Support	Duration, Type55, Hit, Attack
Awakened Void Manipulation Support	Hit, Attack, DamageOverTime
Awakened Vicious Projectiles Support	ProjectileAttack, Type56
Awakened Added Chaos Damage Support	Hit, Attack
Awakened Added Lightning Damage Support	Attack, Hit
Awakened Controlled Destruction Support	Hit, Attack, Type59
Awakened Hextouch Support	Attack, Hit
Awakened Elemental Focus Support	Hit, Attack, CausesBurning, NonHitChill
Awakened Increased Area of Effect Support	Area, CreateMinion, Type53
Awakened Lightning Penetration Support	Hit, Attack
Awakened Unbound Ailments Support	Hit, Attack, CauseElementalStatus
Trinity Support	Hit, Attack

Caustic Arrow Monster /18

Name	Modifiers	Spectre
Alira's Deadeye	Fires Caustic Arrows	Y
Alira's Souleye	Fires Caustic Arrows	Y
Devoted Bandit	Fires Caustic Arrows	Y
Wolfpack Ranger	Fires Caustic Arrows	Y
Plagued Bowman	Undead Fires Caustic Arrows	Y
Izioc, the Abyss	monster_slain_experience_+% [100] monster_dropped_item_quantity_+% [1500] monster_dropped_item_rarity_+% [2000] unique_boss_curse_effect_on_self_+%_final [-33] cannot_be_taunted_when_taunted_ms [0] monster_penalty_against_minions_damage_+%_final_vs_player_minions [-20] cannot_be_stunned_while_stunned [1] cannot_be_stunned_for_ms_after_stun_finished [2000]	Y
Lord of the Bow	monster_slain_experience_+% [100] monster_dropped_item_quantity_+% [1500] monster_dropped_item_rarity_+% [2000] Fast Attacks Extra Projectiles unique_boss_curse_effect_on_self_+%_final [-33] cannot_be_taunted_when_taunted_ms [0] Uses Puncture cannot_be_stunned_while_stunned [1] cannot_be_stunned_for_ms_after_stun_finished [2000]	Y
Antalie Napora	monster_base_type_attack_cast_speed_+%_and_damage_-%_final [33] monster_dropped_item_rarity_+% [500] unique_boss_curse_effect_on_self_+%_final [0] Fast Attacks	Y
Silva Fearsting	monster_base_type_attack_cast_speed_+%_and_damage_-%_final [33] monster_dropped_item_rarity_+% [500] unique_boss_curse_effect_on_self_+%_final [0]	Y
Corrupted Deadeye	Fires Caustic Arrows monster_no_map_drops [1]	Y
Eyepecker	summon_totem_cast_speed_+% [0] number_of_additional_totems_allowed [1] kill_traps_mines_and_totems_on_death [1]	Y
Stonebeak, Battle Fowl	cannot_be_taunted_when_taunted_ms [0] unique_boss_curse_effect_on_self_+%_final [-33] number_of_additional_totems_allowed [1] summon_totem_cast_speed_+% [0] monster_slain_experience_+% [100] monster_dropped_item_quantity_+% [1500] monster_dropped_item_rarity_+% [2000] cannot_be_stunned_while_stunned [1] cannot_be_stunned_for_ms_after_stun_finished [2000]	Y
Rudiarius Felix	monster_base_type_attack_cast_speed_+%_and_damage_-%_final [33] monster_dropped_item_rarity_+% [500] unique_boss_curse_effect_on_self_+%_final [0] Fast Attacks traps_invulnerable_for_duration_ms [4000] mines_invulnerable_for_duration_ms [4000] kill_traps_mines_and_totems_on_death [1]	Y
Rudiarius Felix	Quick monster_dropped_item_rarity_+% [500] unique_boss_curse_effect_on_self_+%_final [0] traps_invulnerable_for_duration_ms [4000] mines_invulnerable_for_duration_ms [4000]	Y
Avatar of the Huntress	Quick monster_slain_experience_+% [100] monster_dropped_item_quantity_+% [1500] monster_dropped_item_rarity_+% [2000] unique_boss_curse_effect_on_self_+%_final [-33] traps_invulnerable_for_duration_ms [4000] mines_invulnerable_for_duration_ms [4000] kill_traps_mines_and_totems_on_death [1] cannot_be_stunned_while_stunned [1] cannot_be_stunned_for_ms_after_stun_finished [2000]	Y
Blackguard Jaeger	Fires Caustic Arrows	Y
Blighted Deadeye	Fires Caustic Arrows monster_slain_experience_+% [0] monster_dropped_item_quantity_+% [0] monster_dropped_item_rarity_+% [0] monster_no_map_drops [1]	Y
Clattering Experiment	monster_no_map_drops [1]	Y