Matchup

Heavy AD damageHigh sustainDive threatHigh burst

Build vs Kayn

Build adapted to this matchup

Starting items

Doran's Ring
Health Potion
x2

Core build

Hextech Rocketbelt
1Mage tank
Stormsurge
2vs Tank
Shadowflame
3vs Tank

Standard

Sorcerer's Shoes
4Magic pen
Zhonya's Hourglass
5vs AD

Summoner spells

41259%
41441%

Anti AD

Plated Steelcaps
4vs AD
Zhonya's Hourglass
5vs AD

Anti CC

Mercury's Treads
4vs CC

Anti Tank

Void Staff
5vs Tank

DPS

Cosmic Drive
Mage tank
Seraph's Embrace
Mage
Lich Bane
Mage
Luden's Echo
Mage
Rabadon's Deathcap
Mage

Other options

Rod of Ages
HP
Oblivion Orb
Mejai's Soulstealer
Fimbulwinter
Survival
Tear of the Goddess
100.0% WR2 games
SorcerySorcery
Arcane CometArcane Comet
Manaflow BandManaflow Band
TranscendenceTranscendence
ScorchScorch
InspirationInspiration
Biscuit DeliveryBiscuit Delivery
Cosmic InsightCosmic Insight
Adaptive ForceAdaptive ForceHealth Scaling

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
GragasGragas
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