Caustic Arrow

Attack, 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: 32.6 metres per Second

Radius: 20

Requires Level (1—70), (0—155) Dex

Requires Bows

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 (8.8—1927.1) Base Chaos Damage per second

Base duration is 2 seconds

60% of Physical Damage Converted to Chaos Damage

Modifiers to Projectile Damage apply to this Skill's Damage Over Time effect

+(0—0.6) metres to radius

Additional Effects From Quality:

+(0—0.2) metres to radius

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

Quest /2

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

Genus

Vaal Caustic Arrow

Caustic Arrow

Caustic Arrow of Poison

Skills Tutorial /6

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

Pierce Support
Allows projectiles from Caustic Arrow to travel through more enemies, creating multiple patches of caustic ground, dealing damage to more enemies simultaneously.

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.

Level Effect /40

Implicit
Base duration is 2 seconds
60% of Physical Damage Converted to Chaos Damage
Modifiers to Projectile Damage apply to this Skill's Damage Over Time effect

Level	Requires Level	Dex	Mana	Base Damage	Deals 8.8 Base Chaos Damage per second	# metres to radius	Experience
1	1	0	6	55%, 55%, 55%	8.8	0	70
2	2	0	6	55.5%, 55.5%, 55.5%	10.1	0	308
3	4	16	6	56%, 56%, 56%	13.1	0.1	1,554
4	7	22	6	56.5%, 56.5%, 56.5%	18.4	0.1	6,667
5	11	31	6	57%, 57%, 57%	27.8	0.1	26,047
6	16	41	7	57.5%, 57.5%, 57.5%	44	0.2	49,725
7	20	50	7	58%, 58%, 58%	61.9	0.2	95,714
8	24	58	7	58.5%, 58.5%, 58.5%	85.4	0.2	169,595
9	28	67	7	59%, 59%, 59%	116.2	0.3	283,759
10	32	75	8	59.5%, 59.5%, 59.5%	156.4	0.3	453,996
11	36	83	8	59.9%, 59.9%, 59.9%	208.5	0.3	703,128
12	40	92	8	60.4%, 60.4%, 60.4%	275.9	0.3	1,061,223
13	44	100	8	60.9%, 60.9%, 60.9%	362.7	0.4	2,065,870
14	48	109	9	61.4%, 61.4%, 61.4%	474.1	0.4	2,507,110
15	52	117	9	61.9%, 61.9%, 61.9%	616.9	0.4	5,798,936
16	56	125	9	62.4%, 62.4%, 62.4%	799.3	0.5	15,083,919
17	60	134	9	62.9%, 62.9%, 62.9%	1031.9	0.5	27,792,735
18	64	142	10	63.4%, 63.4%, 63.4%	1327.6	0.5	43,869,739
19	67	148	10	63.9%, 63.9%, 63.9%	1600.8	0.6	242,081,556
20	70	155	10	64.4%, 64.4%, 64.4%	1927.1	0.6
21	72		10	64.9%, 64.9%, 64.9%	2179.2	0.6
22	74		10	65.4%, 65.4%, 65.4%	2462.7	0.7
23	76		10	65.9%, 65.9%, 65.9%	2781.5	0.7
24	78		11	66.4%, 66.4%, 66.4%	3139.9	0.7
25	80		11	66.9%, 66.9%, 66.9%	3542.6	0.8
26	82		11	67.4%, 67.4%, 67.4%	3995	0.8
27	84		11	67.9%, 67.9%, 67.9%	4503.1	0.8
28	86		11	68.4%, 68.4%, 68.4%	5073.4	0.9
29	88		11	68.9%, 68.9%, 68.9%	5713.5	0.9
30	90		11	69.4%, 69.4%, 69.4%	6431.6	0.9
31	91		11	69.8%, 69.8%, 69.8%	6822.8	0.9
32	92		11	70.3%, 70.3%, 70.3%	7237.1	1
33	93		12	70.8%, 70.8%, 70.8%	7675.8	1
34	94		12	71.3%, 71.3%, 71.3%	8140.3	1
35	95		12	71.8%, 71.8%, 71.8%	8632.2	1.1
36	96		12	72.3%, 72.3%, 72.3%	9152.9	1.1
37	97		12	72.8%, 72.8%, 72.8%	9704.2	1.1
38	98		12	73.3%, 73.3%, 73.3%	10287.7	1.2
39	99		12	73.8%, 73.8%, 73.8%	10905.4	1.2
40	100		12	74.3%, 74.3%, 74.3%	11559.3	1.2

Attribute /11

Name	Show Full Descriptions
Cost	iLvl 1: Normal: 1xScroll of Wisdom
Acronym	Projectile, Modifiers
Id	CausticArrow
BaseType	Caustic Arrow
Class	Skill Gems
Weapon	Bows
TargetTypes	Ground, Enemy
Type	Attack, RangedAttack, MirageArcherCanUse, Projectile, ProjectilesFromUser, Area, Duration, Trappable, Mineable, Totemable, DamageOverTime, Chaos, Triggerable
ItemType	Metadata/Items/Gems/SkillGemPoisonArrow
ActiveSkillsCode	caustic_arrow
Reference	poe.ninja, Community Wiki

Crucible Weapon /1

Weight	Desc
1000 (T5)	Caustic Arrow and Scourge Arrow fire 25% more projectiles

Version history /13

Version	Changes
3.25.0	Caustic Arrow of Poison: No longer has Added Chaos Damage at all gem levels. It now has 72% Effectiveness of Base and Added Damage at gem level 1 (previously 55%), scaling up to 91% at gem level 20 (previously 70%).
3.23.0	Caustic Arrow: Vaal Caustic Arrow:
3.21.0	Projectiles which initially fire at a specific location rather than in a direction, such as Caustic Arrow, now ignore this when returning, so they will continue past you until they hit something.
3.20.0	Introduced 8 new Vaal Skill Gems: Vaal Cleave, Vaal Flicker Strike, Vaal Blade Flurry, Vaal Venom Gyre, Vaal Molten Strike, Vaal Caustic Arrow, Vaal Volcanic Fissure, and Vaal Smite.
3.12.0	The following skills have received visual updates: Lightning Strike, Fire Storm, Ice Storm (from The Whispering Ice), Caustic Arrow, Smoke Mine, Discharge and all Curses,
3.10.0	Arctic Breath, Caustic Arrow, Frost Blades, Ice Nova, Molten Shell, Molten Strike and Scorching Ray have had visual upgrades.
3.9.0	Caustic Arrow
3.6.0	Caustic Arrow's hit now deals 30% less damage against players (previously had no penalty).
3.4.0	Updated the visuals for several older skills. Namely: Ice Nova, Cleave, Frenzy, Heavy Strike, Caustic Arrow, and Double Strike. The default attack and wand attack both also have new effects. In this expansion, we reworked three existing skills: Dominating Blow, Static Strike, and Caustic Arrow. Caustic Arrow 60% of Physical Damage is now converted to Chaos Damage (previously, Caustic Arrow added extra Chaos damage based on Physical damage).
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.
2.6.0	Caustic Arrow gains 1 additional unit of radius every 5 levels.
2.3.0	Fixed an issue where Rudiarius Felix, Avatar of the Huntress' Caustic Arrow Trap had a very short duration.
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.

Caustic Arrow

Attack, 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: 32.6 metres per Second

Radius: 20

Requires Level (1—70), (0—155) Dex

Requires Bows

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 (8.8—1927.1) Base Chaos Damage per second

Base duration is 2 seconds

60% of Physical Damage Converted to Chaos Damage

Modifiers to Projectile Damage apply to this Skill's Damage Over Time effect

+(0—0.6) metres to radius

caustic arrow explode on hit base area of effect radius [12]

skill can fire arrows [1]

visual hit effect chaos is green [1]

Additional Effects From Quality:

+(0—0.2) metres to radius

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

Supported By /139

Active Type: Attack, RangedAttack, MirageArcherCanUse, Projectile, ProjectilesFromUser, Area, Duration, Trappable, Mineable, Totemable, DamageOverTime, Chaos, Triggerable

Added Fire Damage Support

Supports any skill that hits enemies.

Knockback Support

Supports any skill that hits enemies.

Life Leech Support

Supports any skill that hits enemies, causing those hits to leech life based on damage dealt.

Stun Support

Supports any skill that hits enemies, making it easier to stun enemies with those skills.

More Duration Support

Supports any skill with a duration.

Cold to Fire Support

Supports any skill that hits enemies.

Elemental Damage with Attacks Support

Supports attack skills.

Life Gain on Hit Support

Supports attack skills.

Iron Grip Support

Supports attack skills that fire projectiles, making the increase to physical melee damage from strength also increase their physical projectile damage.

Damage on Full Life Support

Supports attack skills, providing a bonus to all damage dealt by those skills while your life is full.

Ballista Totem Support

Supports any bow or wand attack skill, causing it to summon a ballista totem that uses the skill for you.

Fire Penetration Support

Supports any skill that hits enemies, making those hits penetrate enemy fire resistance.

Burning Damage Support

Supports any skill that hits enemies, or can deal burning damage directly.

Empower Support

Supports any skill gem. Once this gem reaches level 2 or above, will raise the level of supported gems. Cannot support skills that don't come from gems.

Less Duration Support

Supports any skill that has a duration.

Chance to Bleed Support

Supports attack skills.

Maim Support

Supports attack skills, or other skills that can maim enemies.

Brutality Support

Supports any skill that deals damage.

Awakened Added Fire Damage Support

Supports any skill that hits enemies.

Awakened Brutality Support

Supports any skill that deals damage.

Awakened Burning Damage Support

Supports any skill that hits enemies, or can deal burning damage directly.

Awakened Elemental Damage with Attacks Support

Supports attack skills.

Awakened Fire Penetration Support

Supports any skill that hits enemies, making those hits penetrate enemy fire resistance.

Awakened Empower Support

Supports any skill gem. Once this gem reaches level 2 or above, will raise the level of supported gems. Cannot support skills that don't come from gems.

Bloodthirst Support

Supports attack skills. Cannot support triggered skills, skills which create minions, or skills used by totems, traps or mines.

Cruelty Support

Supports any skill that hits enemies. Minions cannot gain Cruelty.

Lifetap Support

Supports any non-blessing skill. Minions cannot gain the Lifetap buff.

Volatility Support

Supports attack skills.

Annihilation Support

Supports any skill that hits enemies.

Faster Attacks Support

Supports attack skills.

Greater Multiple Projectiles Support

Supports projectile skills.

Multiple Projectiles Support

Supports projectile skills.

Faster Projectiles Support

Supports projectile skills.

Added Cold Damage Support

Supports any skill that hits enemies.

Additional Accuracy Support

Supports attack skills.

Mana Leech Support

Supports attack skills that hit enemies, causing those hits to leech mana based on damage dealt.

Pierce Support

Supports projectile skills.

Trap Support

Supports spells, or attacks that use bows or wands. Instead of using that skill, you will throw a trap that will use the skill for you when an enemy walks near it. Traps cannot use channelling skills.

Culling Strike Support

Supports any skill that hits enemies. If enemies are left below 10% of maximum life after being hit by these skills, they will be killed.

Point Blank Support

Supports projectile skills.

Chance to Flee Support

Supports any skill that hits enemies.

Blind Support

Supports any skill that hits enemies.

Cold Penetration Support

Supports any skill that hits enemies, making those hits penetrate enemy cold resistance.

Chain Support

Supports projectile skills, and any other skills that chain.

Fork Support

Supports projectile skills, making their projectiles fork into two projectiles the first time they hit an enemy and don't pierce it.

Returning Projectiles Support

Supports projectile skills.

Cast On Critical Strike Support

Must support both an attack skill and a spell skill to work. The attack skill will trigger a spell when it critically strikes an enemy. Cannot support totems, traps, or mines. Vaal skills, channelling skills, and skills with a reservation cannot be triggered.

Slower Projectiles Support

Supports projectile skills.

Enhance Support

Supports any skill gem. Once this gem reaches level 2 or above, will raise the quality of supported gems. Cannot support skills that don't come from gems.

Vicious Projectiles Support

Supports projectile attack skills.

Block Chance Reduction Support

Supports any skill that hits enemies.

Ice Bite Support

Supports any skill you use to hit enemies yourself. Cannot support skills used by totems, traps, or mines.

Hypothermia Support

Supports any skill that deals damage.

Critical Strike Affliction Support

Supports any skill that hits enemies.

Void Manipulation Support

Supports any skill that deals damage.

Swift Affliction Support

Supports any skill that has a duration, or can hit enemies to inflict ailments on them.

Chance to Poison Support

Supports any skill that hits enemies.

Deadly Ailments Support

Supports any skill that hits enemies.

Vile Toxins Support

Supports any skill that hits enemies.

Momentum Support

Supports attack skills that aren't triggered.

Volley Support

Supports skills that fire projectiles from the user. Does not affect projectiles fired from other locations as secondary effects. Does not support skills that fire projectiles in a spiral.

Mirage Archer Support

Supports attack skills that can be used with bows. Supported skills can only be used with bows. Cannot support Vaal skills, minion skills, movement skills, or skills used by totems, traps, or mines.

Withering Touch Support

Supports attack skills.

Impale Support

Supports attack skills.

Nightblade Support

Supports attack skills. Cannot support skills which create minions.

Arrow Nova Support

Supports bow attack skills that fire arrows forwards as projectiles. These skills will instead fire a payload arrow into the air to land at a targeted location. The supported skills' arrows will then fire out in a circle from where it lands. Cannot support skills that already fire arrows into the air, channelled skills, or skills that create Minions.

Barrage Support

Supports projectile attack skills that use bows or wands. Cannot support triggered skills, channelled skills, or skills that create Minions.

Greater Volley Support

Supports skills that fire projectiles from the user. Does not affect projectiles fired from other locations as secondary effects. Does not support skills that fire projectiles in a spiral.

Awakened Added Cold Damage Support

Supports any skill that hits enemies.

Awakened Arrow Nova Support

Awakened Cast On Critical Strike Support

Awakened Chain Support

Supports projectile skills, and any other skills that chain.

Awakened Cold Penetration Support

Supports any skill that hits enemies, making those hits penetrate enemy cold resistance.

Awakened Deadly Ailments Support

Supports any skill that hits enemies.

Awakened Fork Support

Supports projectile skills, making their projectiles fork into two projectiles the first two times they hit an enemy and don't pierce it.

Awakened Greater Multiple Projectiles Support

Supports projectile skills.

Awakened Swift Affliction Support

Supports any skill that has a duration, or can hit enemies to inflict ailments on them.

Awakened Void Manipulation Support

Supports any skill that deals damage.

Awakened Vicious Projectiles Support

Supports projectile attack skills.

Awakened Enhance Support

Supports any skill gem. Once this gem reaches level 2 or above, will raise the quality of supported gems. Cannot support skills that don't come from gems.

Manaforged Arrows Support

Supports bow attack skills, causing them to trigger when you've spent enough mana in total on other bow attacks. Cannot modify the skills of minions. Cannot support totems, traps, mines, Vaal skills, or channelling skills

Locus Mine Support

Supports attack skills that use bows or wands and fire projectiles ahead. Instead of using that skill, you will throw mines that will use the skill for you when you detonate them, targeting your location. Mines cannot use channelling skills.

Sadism Support

Supports any skill that hits enemies.

Rupture Support

Supports attack skills.

Machinations Support

Supports skills that hit enemies. Cannot modify the skills of minions.

Cull the Weak Support

Supports any skill that hits enemies. If normal or magic enemies are left below a percentage of maximum life after being hit by these skills, they will be killed.

Greater Fork Support

Supports projectile skills, making their projectiles fork into two projectiles the first two times they hit an enemy and don't pierce it.

Greater Chain Support

Supports projectile skills, and any other skills that chain.

Lethal Dose Support

Supports any skill that hits enemies.

Unholy Trinity Support

Supports skills that hit enemies, causing them to gain bonuses while you have unholy resonance of lightning, physical and chaos, and to grant unholy resonance of damage types other than the highest one in a hit. There is a maximum of 50 unholy resonance for each damage type. Cannot support triggered skills, instant skills, orb skills, brands, skills with a reservation, or skills used by totems, traps, or mines. Cannot modify the skills of minions.

Windburst Support

Supports Attack Skills, causing them to trigger Windburst on hit after you've travelled a certain distance. Cannot support triggered skills or skills used by things other than you. Cannot modify the skills of minions.

Increased Area of Effect Support

Supports any skill with an area of effect.

Added Lightning Damage Support

Supports any skill that hits enemies.

Increased Critical Strikes Support

Supports any skill that hits enemies.

Increased Critical Damage Support

Supports any skill that hits enemies.

Added Chaos Damage Support

Supports any skill that hits enemies.

Item Rarity Support

Supports any skill that can kill enemies.

Concentrated Effect Support

Supports any skill with an area of effect, regardless of whether that skill deals damage.

Combustion Support

Supports any skill that hits enemies.

Elemental Proliferation Support

Supports any skill that hits enemies, or could otherwise apply elemental ailments.

Blastchain Mine Support

Supports spells, or attacks that use bows or wands. Instead of using that skill, you will throw a mine that will use the skill for you when you detonate it. Mines cannot use channelling skills.

Lightning Penetration Support

Supports any skill that hits enemies, making those hits penetrate enemy lightning resistance.

Elemental Penetration Support

Supports any skill that hits enemies, making those hits penetrate enemy elemental resistances.

Power Charge On Critical Support

Supports any skill that hits enemies.

Hextouch Support

Must support both a skill that hits enemies, and a hex curse skill to work. The hex will be applied when enemies are hit by the other skill. Cannot support totems, traps, or mines. Minions cannot apply hexes this way.

Enlighten Support

Supports any skill gem. Once this gem reaches level 2 or above, will apply a cost & reservation multiplier to supported gems. Cannot support skills that don't come from gems.

Physical to Lightning Support

Supports any skill that hits enemies.

Innervate Support

Supports any skill you use to hit enemies yourself. Cannot support skills used by totems, traps, or mines.

Controlled Destruction Support

Supports attack skills, or spell skills that deal damage.

Elemental Focus Support

Supports any skill that hits or burns enemies, or inflicts elemental ailments.

Ignite Proliferation Support

Supports any skill that hits enemies.

Decay Support

Supports any skill that hits enemies.

Efficacy Support

Supports any skill that deals damage or has a duration.

Immolate Support

Supports any skill that hits enemies.

Unbound Ailments Support

Supports any skill that hits enemies or inflicts ailments

Summon Phantasm Support

Supports skills that can hit enemies, or create minions. When those skills or minions kill enemies, or hit rare or unique enemies they will have a chance to summon a Phantasm minion, which uses a piercing projectile spell that deals physical damage.

Bonechill Support

Supports any skill that can chill enemies or create chilling areas.

Energy Leech Support

Supports any skill that hits enemies, causing those hits to leech energy shield based on damage dealt.

High-Impact Mine Support

Supports spells, or attacks that use bows or wands. Instead of using that skill, you will throw a mine that will use the skill for you when you detonate it. Mines cannot use channelling skills.

Awakened Added Chaos Damage Support

Supports any skill that hits enemies.

Awakened Added Lightning Damage Support

Supports any skill that hits enemies.

Awakened Controlled Destruction Support

Supports attack skills, or spell skills that deal damage.

Awakened Hextouch Support

Awakened Elemental Focus Support

Supports any skill that hits or burns enemies, or inflicts elemental ailments.

Awakened Increased Area of Effect Support

Supports any skill with an area of effect.

Awakened Lightning Penetration Support

Supports any skill that hits enemies, making those hits penetrate enemy lightning resistance.

Awakened Unbound Ailments Support

Supports any skill that hits enemies or inflicts ailments

Awakened Enlighten Support

Supports any skill gem. Once this gem reaches level 2 or above, will apply a cost & reservation multiplier to supported gems. Cannot support skills that don't come from gems.

Trinity Support

Supports skills that hit enemies, causing them to gain bonuses while you have resonance of all three elements, and to grant resonance of elements other than the highest one in a hit. There is a maximum of 50 Resonance for each Element. Cannot support triggered skills, instant skills, orb skills, brands, skills with a reservation, or skills used by totems, traps, or mines. Cannot modify the skills of minions.

Overcharge Support

Supports any skill that hits enemies.

Prismatic Burst Support

Supports attacks, causing them to trigger the Prismatic Burst spell. Cannot support triggered attacks or attacks used by things other than you. Cannot modify the skills of minions.

Devour Support

Supports any skill that hits enemies.

Sacred Wisps Support

Supports attack skills that can be used with Wands. Cannot support Vaal skills, minion skills, movement skills, or skills used by totems, traps, or mines.

Invert the Rules Support

Supports any skill that hits enemies.

Greater Kinetic Instability Support

Supports Wand Attacks, granting them a chance to trigger Kinetic Flux on critical strike. Cannot support triggered skills or skills used by things other than you. Cannot modify the skills of minions.

Greater Devour Support

Supports any skill that hits enemies.

Kinetic Instability Support

Supports Wand Attacks, granting them a chance to trigger Kinetic Flux on kill. Cannot support triggered skills or skills used by things other than you. Cannot modify the skills of minions.

Living Lightning Support

Supports Skills which cause Damaging Hits, causing them to trigger Summon Living Lightning when dealing lightning damage. Cannot support skills used by totems, traps, or mines. Cannot modify the skills of Minions.

Eclipse Support

Supports any skill gem. Cannot support skills that don't come from gems.

Microtransactions /3

Tentacle Caustic Arrow Effect

Your Caustic Arrow becomes an area of ethereal purple tentacles.

Celestial Caustic Arrow Effect

Your Caustic Arrow becomes a Celestial Effect.

Oblivion Caustic Arrow Effect

Your Caustic Arrow becomes an Oblivion Effect.

Caustic Arrow Monster /24

Name	Modifiers	Spectre
Alira's Deadeye		Y
Shadow Archer		Y
Alira's Souleye		Y
Devoted Bandit		Y
Wolfpack Ranger		Y
Plagued Bowman	undead description [1] monster fires caustic arrows text [1]	Y
Izioc, the Abyss	15000% increased Rarity of Items Dropped Monsters grant 100% increased Experience monster penalty against minions damage +% final vs player minions [-20] cannot be stunned for ms after stun finished [2000] cannot be stunned while stunned [1]	Y
Lord of the Bow	15000% increased Rarity of Items Dropped Monsters grant 100% increased Experience 40% increased Attack Speed Skills fire 2 additional Projectiles cannot be stunned for ms after stun finished [2000] cannot be stunned while stunned [1]	Y
Batoor, of the Afarud	monster base type attack cast speed +% and damage -% final [33] 20% increased Attack Speed	Y
Antalie Napora	monster base type attack cast speed +% and damage -% final [33] 20% increased Attack Speed	Y
Antalie Napora	monster base type attack cast speed +% and damage -% final [33] 20% increased Attack Speed 100% increased maximum Life 100% increased Area of Effect 80% increased Character Size	Y
Silva Fearsting	monster base type attack cast speed +% and damage -% final [33]	Y
Corrupted Deadeye	monster no map drops [1]	Y
Eyepecker	+1 to maximum number of Summoned Totems kill traps mines and totems on death [1]	Y
Stonebeak, Battle Fowl	+1 to maximum number of Summoned Totems 15000% increased Rarity of Items Dropped Monsters grant 100% increased Experience cannot be stunned for ms after stun finished [2000] cannot be stunned while stunned [1]	Y
Rudiarius Felix	monster base type attack cast speed +% and damage -% final [33] 20% increased Attack Speed Traps cannot be Damaged for +4 seconds after being Thrown Mines cannot be Damaged for +4 seconds after being thrown kill traps mines and totems on death [1]	Y
Rudiarius Felix	30% increased Movement Speed Traps cannot be Damaged for +4 seconds after being Thrown Mines cannot be Damaged for +4 seconds after being thrown	Y
Avatar of the Huntress	30% increased Movement Speed 15000% increased Rarity of Items Dropped Monsters grant 100% increased Experience Traps cannot be Damaged for +4 seconds after being Thrown Mines cannot be Damaged for +4 seconds after being thrown kill traps mines and totems on death [1] cannot be stunned for ms after stun finished [2000] cannot be stunned while stunned [1]	Y
Blackguard Jaeger	monster fires caustic arrows text [1]	Y
Blighted Deadeye	monster fires caustic arrows text [1]	Y
Clattering Experiment	monster no map drops [1]	Y
Clattering Experiment		Y
Clattering Bones	monster no map drops [1]	Y
Forged Skeleton	undead description [1]	Y

Community Wiki

Edit

Caustic Arrow

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 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: firing additional projectiles can spread caustic ground over a wider area, but the damage over time from overlapping patches of caustic ground does not stack.
Piercing: piercing Caustic Arrow projectiles will spread caustic ground 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 Support) that increase projectile damage will increase both the damage on hit and the area of effect damage.
Concentrated Effect: 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.
Point Blank: Point Blank does not affect the damage from caustic ground; it only affects projectile attack damage.[2]
Iron Grip: The strength bonus from the Iron Grip keystone passive does not affect the damage from caustic ground because it is not considered an attack nor is it based on physical damage. The increased projectile damage portion of the Iron Grip Support will increase the damage from caustic ground, 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 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: modifiers to duration will affect the duration of the caustic ground.
Culling strike: The increased damage from Culling Strike Support applies to the damage from caustic ground, but the caustic ground will not kill enemies instantly when they have less than 10% life.
Curses: Sniper's Mark requires the target to be hit. The caustic ground won't be affected by it.Despair does affect the caustic ground.

Version history

Version	Changes
3.12.4d	Fixed an issue which prevented the quality effect on Anomalous '''Caustic Arrow''' from working.
3.12.0	Now has alternative quality: Anomalous 1% chance to inflict Withered on Hit (per 1% quality) Divergent 1% of Physical Damage Converted to Chaos Damage (per 1% quality)
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).
3.6.0	Caustic Arrow's hit now deals 30% less damage against players (previously had no penalty).
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.
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)

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