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Matchup

Janna
Janna
30%
70%

vs

50.0%
Sejuani
Sejuani
45%
55%
Heavy CCVery tankyStrong engage

Build vs Sejuani

Build adapted to this matchup

Starting items

Health Potion
x2

Core build

Moonstone Renewer
1HP
Shurelya's Battlesong
2
Redemption
3

Standard

Boots of Swiftness
4vs Slow
Dream Maker
5HP

Summoner spells

4793%
347%

Anti CC

Mercury's Treads
4vs CC

Other options

Dream Maker
HP
Ardent Censer
Mikael's Blessing
HP
Dawncore
100.0% WR2 games
SorcerySorcery
Summon AerySummon Aery
Manaflow BandManaflow Band
CelerityCelerity
Gathering StormGathering Storm
ResolveResolve
RevitalizeRevitalize
Font of LifeFont of Life
Adaptive ForceMove SpeedHealth Scaling

Power Spikes

Strength by game phase

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