Matchup

LeeSin
Lee Sin
73%
27%

vs

51.5%

over 1321 games

Sejuani
Sejuani
45%
55%
Heavy CCVery tankyStrong engage

Skill matchup

You are stronger early — look to snowball before your opponent scales.

Build vs Sejuani

Build adapted to this matchup

Starting items

Scorchclaw Pup
Health Potion

Core build

Eclipse
1DPS
Sundered Sky
2Bruiser
Guardian Angel
3vs AD

Standard

Boots of Swiftness
4vs Slow
Black Cleaver
5vs Tank

Summoner spells

411100%
11140%

Anti AD

Plated Steelcaps
4vs AD
Death's Dance
5vs AD
Randuin's Omen
vs AD

Anti Heal

Chempunk Chainsword
6vs Heal

Anti AP

Mercury's Treads
4vs CC
Maw of Malmortius
5vs AP
Spirit Visage
vs AP
Kaenic Rookern
vs AP

Anti Heal

Thornmail
6vs Hybride

Anti Tank

Black Cleaver
5vs Tank
Profane Hydra
vs Tank
Hubris
vs Tank
Voltaic Cyclosword
vs Tank
Axiom Arc
vs Tank
Serpent's Fang
vs Tank
Edge of Night
vs Tank
Lord Dominik's Regards
vs Tank
The Collector
vs Tank
Serylda's Grudge
vs Tank
Youmuu's Ghostblade
vs Tank

DPS

Ravenous Hydra
DPS
Endless Hunger
DPS
Spear of Shojin
Bruiser

Other options

Sterak's Gage
Survival
Jak'Sho, The Protean
vs Hybride
84.0% WR25 games
PrecisionPrecision
ConquerorConqueror
TriumphTriumph
Legend: AlacrityLegend: Alacrity
Coup de GraceCoup de Grace
InspirationInspiration
Magical FootwearMagical Footwear
Cosmic InsightCosmic Insight
Attack SpeedAdaptive ForceHealth Scaling

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
LeeSinLee Sin
SejuaniSejuani
Aggressive
Careful
Careful

Sejuani's abilities

Passive, spells and ultimate

Fury of the North (P)

After being out of combat, Sejuani gains Frost Armor which grants Armor and Magic Resist and immunity to slows. Frost Armor persists for a short time after Sejuani takes damage. Sejuani can damage a stunned enemy to shatter it, dealing massive magic damage.

Cooldowns

Cooldowns by spell rank

LevelQWER
318s9s1.5s
615s9s1.5s2m
912s8s1.5s2m
1112s7s1.5s1m45
1612s5s1.5s1m30
1812s5s1.5s1m30

Playing against Sejuani

How to counter and exploit weaknesses

1

Sejuani needs 4 frost stacks to stun — don't stay in range of her extended autos.

2

Her Q is a slow and predictable dash — sidestep or Flash the knockup.

3

She's weak in 1v1 but excels in teamfights — invade her early in the jungle when she's vulnerable.

4

Tenacity reduces the duration of her many CCs — buy Tenacity if you're frontline.

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