Mordekaiser vs Sejuani — Top Lane Matchup Guide

How to win lane as Mordekaiser against Sejuani · 52.89% win rate (143 Emerald+ games, lolalytics, sampled July 2026) · Matchup data reviewed on patch 26.15

Verdict: Mordekaiser is slightly favoured — 52.89% win rate over 143 games, and Mordekaiser's game plan below claims 5 of the 7 stage windows.

At a glance

Bully her — E-pull into Q, and the Realm 1v1 is always yours.

Track: Sejuani's E — Permafrost. Her stun after Frost stacks. Don't get stacked + stunned.

Do

  • E-pull when Permafrost is down
  • Land the Q center for max damage
  • R-isolate her in the Realm

Don't

  • Trade into her Permafrost
  • Waste Q on minions
  • Ult a target with escapes still up

Runes & build vs Sejuani

Start
Doran's Shield + Health Potion
First back
Haunting Guise / Giant's Belt (≈900-1300g)
First item
Liandry's Torment (burn carries her extended trades)
Then
Riftmaker (omnivamp turns the Realm 1v1 unloseable)
Boots
Plated Steelcaps (Swiftness into kite comps)
Runes
Conqueror (Precision): Triumph, Legend: Haste, Last Stand · Resolve: Bone Plating, Overgrowth · Shards: Adaptive Force, Adaptive Force, Health

Favour timeline — the windows in Mordekaiser's game plan

Read from Mordekaiser's seat: which stage windows this plan plays for against Sejuani.

StageFavouredWhy
Level 1Even / skillYour Obliterate is slow and she sidesteps it at range, but with one ability she has no all-in on you either — it's a clean even farm lane until levels come online.
Level 2MordekaiserW banks a cut of damage dealt and taken into shield-health, so your short Q-auto trades absorb her return chip and come out ahead.
Level 3MordekaiserThree hits ignite Darkness Rise and you E-pull her off-wave into a sweetspot Q — the aura out-grinds her W chip before she can build a Frost stun.
Levels 4-5MordekaiserYour sweetspot Q hits hard on an isolated target and your W heal beats her W percent-HP poke, so every step she takes off the minions is punishable.
Level 6MordekaiserRealm of Death banishes her into a 1v1 with no R AOE stun and no team, and stealing her tank stats makes it the isolation kill she can't decline.
First itemMordekaiserLiandry's + Darkness Rise burn through her armor and HP stacking, so every extended trade is now strictly yours — force them and don't let her short them.
Two+ itemsEven / skillRiftmaker omnivamp keeps the Realm 1v1 yours, but her R AOE stun on your carries means the teamfight is fought for picks and peel, not solo glory.

How to beat Sejuani as Mordekaiser: the early game

"\"Level 1 is even — your Obliterate is slow and telegraphed, so Sejuani sidesteps it while she farms; only throw Q when she's pinned to a minion and last-hit otherwise. From level 2 your W banks a slice of every exchange into shield-health, so short Q-auto pokes come out ahead. At 3 the lane tips: three hits ignite Darkness Rise, and you E-drag her off the wave into a sweetspot Q while the aura burns — her one answer is a Permafrost stun off a full Frost stack, and if she hasn't built it yet she just eats the trade.\""

Hardest and easiest matchups for Mordekaiser in top lane

Pooled Emerald+ win rates from Mordekaiser's side, sampled July 2026.

Hardest

Easiest

Read the rest of this matchup

The full Mordekaiser vs Sejuani report continues with the mid-game plan, the late-game and teamfight plan, every power spike to play around, and the win conditions for both sides — plus cooldown tracking and the live enemy-jungle tracker inside the app.

Read the full guide — plans from $1.99/month →

🔒 Secure checkout · 💰 7-day money-back guarantee on your first payment · ✋ Cancel anytime
Lane Pass $1.99/mo · All Lanes $3.99/mo · Annual $24.99/yr. Renews automatically — cancel anytime.

Common questions

Who wins Mordekaiser vs Sejuani in top lane?

Mordekaiser, slightly — a 52.89% win rate edge over 143 games; execution can flip it.

Is Mordekaiser vs Sejuani a skill matchup?

Mostly — Mordekaiser has a small statistical edge (52.89% win rate), but execution decides this lane far more than the pick does.

Does Mordekaiser counter Sejuani?

Not a hard counter — Mordekaiser has a slight edge (52.89% win rate), and play quality decides the rest.

What runes does Mordekaiser take vs Sejuani?

Mordekaiser takes Conqueror on the Precision tree with Triumph, Legend: Haste and Last Stand, and Resolve secondary (Bone Plating and Overgrowth) vs Sejuani.

What should Mordekaiser build vs Sejuani?

Start Doran's Shield + Health Potion and back for Haunting Guise / Giant's Belt (≈900-1300g). Build Liandry's Torment (burn carries her extended trades) first, then Riftmaker (omnivamp turns the Realm 1v1 unloseable), with Plated Steelcaps (Swiftness into kite comps).

Related guides

Playing the other side? Sejuani vs Mordekaiser guide →
All Mordekaiser top lane matchups →

More Mordekaiser top lane matchups: vs Riven · vs Rumble · vs Ryze · vs Sett · vs Shen · vs Singed