How to win lane as Sejuani against Heimerdinger · 57.5% win rate over 40 Emerald+ games · Updated 2026-07-27
| Stage | Favoured | Why |
|---|---|---|
| Level 1 | Sejuani | His H-28G turrets are not yet placed and your Permafrost armor passive absorbs his solo W rocket poke, giving you free Frost-stacking autos and a clean Q knock-up window. |
| Level 2 | Sejuani | Two Frost stacks plus Winter's Wrath's second strike lets you land a Permafrost stun before his second turret is set — the earliest the nest is incomplete is your best pressure. |
| Level 3 | Even / skill | Both full combos are live but his three turrets are coming online — the lane is genuinely even; catch him mis-positioning outside turret coverage or you lose the trade. |
| Levels 4-5 | Heimerdinger | Three deployed turrets beam your Arctic Assault approach and his UPGRADE!!! rockets outpace your passive Permafrost armor recovery — farm safely at W range only. |
| Level 6 | Heimerdinger | His UPGRADE!!! ult empowers all three turrets for enormous burst; your R exists but diving his nest is suicide — wait for him to step out before throwing Glacial Prison. |
| First item | Sejuani | Sunfire Aegis Immolate lets you tank enough turret beam damage to close distance, and Glacial Prison at long range forces him into a 1v1 away from his nest where your stun chain kills him. |
| Two+ items | Sejuani | At full tank build your Permafrost armor passive stacks so fast you shrug off W rockets; one Glacial Prison root and he has no dash, no escape, and no answer to the Arctic Assault — Permafrost stun chain. |
At level 1 you have real agency: Heimer has no turrets down yet and your passive Permafrost armor soaks his W rocket. Walk up, auto-attack twice to start stacking Frost, and the moment he repositions to place his first turret, Arctic Assault into Winter's Wrath's second swing applies a full Frost stack — Permafrost stun and you have first blood pressure before his nest exists. Level 2 gives you the same window but shrinking: get the Q knock-up trade in before his second turret materialises or the lane shifts against you. Level 3 is genuinely contested — his turrets are nearly full and his grenade E is live, but your own Q-W-E chain can burst him if you catch him standing in a bad spot away from turret coverage.
The full Sejuani vs Heimerdinger 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.
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Playing the other side? Heimerdinger vs Sejuani guide →
All Sejuani top lane matchups →