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Matchup

Karthus
Karthus
17%
83%

vs

43.1%

over 550 games

Master Yi
MasterYi
83%
17%
Sustained DPSHeavy AD damageDive threatSplit push

Hard matchup

Build vs Master Yi

Build adapted to this matchup

Starting items

Scorchclaw Pup
Health Potion

Core build

Dark Seal
1
Blackfire Torch
2Mage
Shadowflame
3vs Tank

Standard

Sorcerer's Shoes
4Magic pen
Rabadon's Deathcap
5Mage

Summoner spells

31153%
41141%

Anti AD

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

Anti Heal

Morellonomicon
6vs Heal

Anti AP

Mercury's Treads
4vs CC
Banshee's Veil
5vs AP

Anti Tank

Void Staff
5vs Tank
Stormsurge
vs Tank
Cryptbloom
vs Tank
Bloodletter's Curse
vs Tank

DPS

Rabadon's Deathcap
Mage
Liandry's Torment
Mage tank
Malignance
Mage
Horizon Focus
Mage
Actualizer
Mage
Rylai's Crystal Scepter
Mage tank

Other options

Mejai's Soulstealer
78.6% WR14 games
DominationDomination
Dark HarvestDark Harvest
Cheap ShotCheap Shot
Grisly MementosGrisly Mementos
Ultimate HunterUltimate Hunter
SorcerySorcery
Axiom ArcanistAxiom Arcanist
Gathering StormGathering Storm
Adaptive ForceAdaptive ForceHealth Scaling

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
KarthusKarthus
MasterYiMaster Yi
Favorable
Favorable
Passive

Master Yi's abilities

Passive, spells and ultimate

Double Strike (P)

Every few consecutive basic attack, Master Yi strikes twice.

Cooldowns

Cooldowns by spell rank

LevelQWER
320s10s14s–
619s10s14s1m25
918s10s14s1m25
1118s10s14s1m25
1618s10s14s1m25
1818s10s14s1m25

Playing against Master Yi

How to counter and exploit weaknesses

1

Hard CC (stun, knockup, suppress) is the only way to stop Master Yi — save a CC to shut him down.

2

Master Yi is very weak in early game jungle: invade him and contest his camps early.

3

Don't run away alone: Yi with R is faster than you and immune to slows. Group up instead.

4

Point-and-click CC is the best counter because he can't dodge it with Q if it's instant.

Source: op.gg + LTL Engine · Patch 16.9.1 · May 8, 2026