Matchup

Heavy AD damageHigh sustainDive threatHigh burst

Build vs Kayn

Build adapted to this matchup

Starting items

Health Potion
x2

Core build

Dead Man's Plate
1vs AD
Bandlepipes
2vs Hybride
Locket of the Iron Solari
3HP

Standard

Boots of Swiftness
4vs Slow
Bloodsong
5HP

Summoner spells

414100%

Anti CC

Mercury's Treads
4vs CC

DPS

Liandry's Torment
Mage tank
Lich Bane
Mage

Other options

Bloodsong
HP
Redemption
Shurelya's Battlesong
100.0% WR1 games
DominationDomination
ElectrocuteElectrocute
Cheap ShotCheap Shot
Deep WardDeep Ward
Treasure HunterTreasure Hunter
InspirationInspiration
Magical FootwearMagical Footwear
Jack Of All TradesJack Of All Trades
Attack SpeedMove SpeedHealth Scaling

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
BardBard
KaynKayn
Passive
Favorable
Favorable

Kayn's abilities

Passive, spells and ultimate

The Darkin Scythe (P)

Kayn wields an ancient weapon and fights Rhaast, the darkin within it, for control. Either the Darkin will triumph, or Kayn will master Rhaast and become the Shadow Assassin.Darkin: Heal for a percentage of spell damage dealt to champions.Shadow Assassin: For the first few seconds in combat with enemy champions, deal bonus damage.

Cooldowns

Cooldowns by spell rank

LevelQWER
37s13s21s
66s13s21s2m
95s12s21s2m
115s11s21s1m40
165s9s17s1m20
185s9s13s1m20

Playing against Kayn

How to counter and exploit weaknesses

1

Ward beyond walls: Kayn passes through walls with his E, classic river wards aren't enough.

2

Blue form (assassin) is squishy: a CC kills him quickly. Red form (Rhaast) has sustain: Grievous Wounds is mandatory.

3

His R makes him untouchable — don't waste abilities when he's inside an ally.

4

Before his transformation, Kayn is relatively weak — invade his jungle early to delay his transformation.

Source: op.gg + LTL Engine · Patch 16.9.1 · May 9, 2026