Kosk of Two Skins

Last Updated: April 7, 2026

Kosk of Two Skins Overview

A creature of deception and venom, Kosk wears the skin of his prey and spreads corruption across the battlefield. His power grows with every debuff, turning chaos into lethal damage.

Kosk is an attack-based, poison specialist, that focuses on debuff spreading and activation. His A1 can extend debuffs or instantly activate poisons, this is hard to manage and plan around due to the low activation cost. But at least you are still getting value one way or another.

His A2 places Increased Accuracy on himself before attacking an enemy. This skill applies Poison Sensitivity and two 5% poisons, then spreads them to all enemies. This essentially makes it an AoE poison effect which is lovely. His A3 places Decrease ATK on all enemies, boosts his Turn Meter for each Decrease ATK applied, and activates all poisons instantly. This allows for massive burst damage after setup.

His passive increases his damage and ignores Defense for each active debuff on enemies, scaling up to 50% damage and 30% ignore DEF. He also counterattacks enemies who are under his debuffs. Kosk is also immune to poison, stun, and decrease speed.

Kosk thrives in wave content where multiple enemies allow him to stack debuffs quickly and reach his full potential.

Kosk of Two Skins Ratings

Core Areas

Dungeons

Doom Tower

Hard Mode

Arena Roles

Understanding Arena Roles

×
Champions normally form specific roles within an arena team. Our ratings define the roles that the champion fits and rates them on their ability to perform the roles. Below you can see a breakdown of all of our roles.
Cleanser
Cleanser
Champions with the Cleanser role will use their skills to remove debuffs and keep them from being re-applied.
Crowd Control
Crowd Control
Champions with the Crowd Control role will use their skills to place soft (i.e. Provoke or Taunt) and hard (i.e Freeze or Stun) debuffs to disable enemy champions.
Damage
Damage
Champions with the Damage role will have skills that deal significant damage and are designed to defeat enemy champions.
Damage Absorption
Damage Absorption
Champions with the Damage Absorption role will have skills or effects that reduce the incoming damage your team takes. This can be through passive damage reduction or by applying skills such as Strengthen or Shields.
Healer
Healer
Champions with the Healer role will have skills that restore your champion's Health including Continuous Heals.
Debuffer
Debuffer
Champions with the Debuffer role will have skills that place debuffs that don't fall into Crowd Control or Skill Manipulator roles i.e. Decrease Defence. These champions may also have skills that remove Buffs.
Reviver
Revive
Champions with the Revive role will have skills that bring your ally champions back from the dead including Revive on Death buffs.
Skill Manipulator
Skill Manipulator
Champions with the Skill Manipulator role will have skills that increase enemy skill cooldowns or reduce your ally skill cooldowns.
Speed Manipulator
Speed Manipulator
Champions with the Speed Manipulator role will have skills that affect the turn meter of your allies or enemies. This includes speed buffs and debuffs aswell as direct turn meter effects.

Live Arena

Select an Arena Tier to retrieve stats

Kosk of Two Skins Skills

10/10

Book Value

A2, A3

Book Priority

Kosk of Two Skins PVE Masteries

General PVE
Offense
blade-disciple
deadly-precision
heart-of-glory
keen-strike
shield-breaker
grim-resolve
single-out
life-drinker
whirlwind-of-death
ruthless-ambush
bring-it-down
wrath-of-the-slain
cycle-of-violence
opportunist
methodical
kill-streak
blood-shield
stoked-to-fury
warmaster
helmsmasher
giant-slayer
flawless-execution
Defense
tough-skin
defiant
blastproof
rejuvenation
might-endurance
improved-parry
shadow-heal
resurgent
bloodthirst
wisdom-of-battle
solidarity
delay-death
harvest-despair
stubbornness
selfless-defender
cycle-of-revenge
retribution
deterrence
iron-skin
bulwark
fearsome-presence
unshakeable
Support
steadfast
pinpoint-accuracy
lay-on-hands
shieldbearer
exalt-in-death
charged-focus
healing-savior
rapid-response
swarm-smiter
arcane-celerity
merciful-aid
cycle-of-magic
lore-of-steel
evil-eye
lasting-gifts
spirit-haste
sniper
master-hexer
elixir-of-life
timely-intervention
oppressor
eagle-eye

Kosk of Two Skins PVP Masteries

Nuker/Debuffer
Debuffer
Offense
blade-disciple
deadly-precision
heart-of-glory
keen-strike
shield-breaker
grim-resolve
single-out
life-drinker
whirlwind-of-death
ruthless-ambush
bring-it-down
wrath-of-the-slain
cycle-of-violence
opportunist
methodical
kill-streak
blood-shield
stoked-to-fury
warmaster
helmsmasher
giant-slayer
flawless-execution
Defense
tough-skin
defiant
blastproof
rejuvenation
might-endurance
improved-parry
shadow-heal
resurgent
bloodthirst
wisdom-of-battle
solidarity
delay-death
harvest-despair
stubbornness
selfless-defender
cycle-of-revenge
retribution
deterrence
iron-skin
bulwark
fearsome-presence
unshakeable
Support
steadfast
pinpoint-accuracy
lay-on-hands
shieldbearer
exalt-in-death
charged-focus
healing-savior
rapid-response
swarm-smiter
arcane-celerity
merciful-aid
cycle-of-magic
lore-of-steel
evil-eye
lasting-gifts
spirit-haste
sniper
master-hexer
elixir-of-life
timely-intervention
oppressor
eagle-eye
Offense
blade-disciple
deadly-precision
heart-of-glory
keen-strike
shield-breaker
grim-resolve
single-out
life-drinker
whirlwind-of-death
ruthless-ambush
bring-it-down
wrath-of-the-slain
cycle-of-violence
opportunist
methodical
kill-streak
blood-shield
stoked-to-fury
warmaster
helmsmasher
giant-slayer
flawless-execution
Defense
tough-skin
defiant
blastproof
rejuvenation
might-endurance
improved-parry
shadow-heal
resurgent
bloodthirst
wisdom-of-battle
solidarity
delay-death
harvest-despair
stubbornness
selfless-defender
cycle-of-revenge
retribution
deterrence
iron-skin
bulwark
fearsome-presence
unshakeable
Support
steadfast
pinpoint-accuracy
lay-on-hands
shieldbearer
exalt-in-death
charged-focus
healing-savior
rapid-response
swarm-smiter
arcane-celerity
merciful-aid
cycle-of-magic
lore-of-steel
evil-eye
lasting-gifts
spirit-haste
sniper
master-hexer
elixir-of-life
timely-intervention
oppressor
eagle-eye

Dungeon and Boss Blessings

Show Arena Blessings

Kosk of Two Skins Relics

Kosk of Two Skins Gear Recommendations

Recommended PVE Stats

SPD, ACC, ATK%, C.RATE, C.DMG

Recommended PVE Artifact Sets

Savage/Lethal, Merciless, Perception

Recommended PVP Stats

SPD, ACC, ATK%, C.RATE, C.DMG

Recommended PVP Artifact Sets

Stoneskin, Savage/Lethal, Feral/Pinpoint

Video Guide