Matchup

Heavy CCVery tankyStrong engage

Build vs Sejuani

Build adapted to this matchup

Starting items

Long Sword
Doran's Blade
Health Potion

Core build

Hextech Gunblade
1Mage
Lich Bane
2Mage
Rabadon's Deathcap
3Mage

Standard

Sorcerer's Shoes
4Magic pen
Muramana
5

Summoner spells

41267%
42133%

Anti CC

Mercury's Treads
4vs CC

Anti Tank

Shadowflame
5vs Tank
Void Staff
vs Tank
Stormsurge
vs Tank

DPS

Seraph's Embrace
Mage

Other options

Muramana
100.0% WR1 games
PrecisionPrecision
Lethal TempoLethal Tempo
Presence of MindPresence of Mind
Legend: BloodlineLegend: Bloodline
Cut DownCut Down
InspirationInspiration
Triple TonicTriple Tonic
Cash BackCash Back
Attack SpeedAdaptive ForceHealth Scaling

Power Spikes

Strength by game phase

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

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