Matchup

Heavy CCVery tankyStrong engage

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

Build vs Sejuani

Build adapted to this matchup

Starting items

Doran's Blade
Health Potion

Core build

Blade of The Ruined King
1DPS
Stridebreaker
2Bruiser
Statikk Shiv
3DPS

Standard

Boots of Swiftness
4vs Slow
Kraken Slayer
5DPS

Summoner spells

42194%
343%

Anti AD

Plated Steelcaps
4vs AD
Thornmail
5vs Hybride
Death's Dance
vs AD
Guardian Angel
vs AD

Anti AP

Mercury's Treads
4vs CC
Spirit Visage
5vs AP

DPS

Kraken Slayer
DPS
Titanic Hydra
Bruiser
Dusk and Dawn
Mage tank

Other options

Sterak's Gage
Survival
Jak'Sho, The Protean
vs Hybride
100.0% WR1 games
PrecisionPrecision
Lethal TempoLethal Tempo
Presence of MindPresence of Mind
Legend: AlacrityLegend: Alacrity
Last StandLast Stand
ResolveResolve
Second WindSecond Wind
RevitalizeRevitalize
Attack SpeedAdaptive ForceHealth Scaling

Power Spikes

Strength by game phase

Early (0-15)
Mid (15-30)
Late (30+)
WarwickWarwick
SejuaniSejuani
Neutral
Neutral
Neutral

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