How to win lane as Heimerdinger against Sejuani · 47.37% win rate over 133 Emerald+ games · Updated 2026-07-27
| Stage | Favoured | Why |
|---|---|---|
| Level 1 | Sejuani | She stacks Frost with a Winter's Wrath arc and Permafrost-stuns you off the wave while you have only one turret and no grenade. |
| Level 2 | Sejuani | Her percent-MAX-HP Winter's Wrath keeps chunking your low base HP every time you walk up to last-hit or refresh turrets. |
| Level 3 | Even / skill | A second turret and the slowing beam let you contest, but Permafrost's stun still punishes any greedy grenade — neither side runs the early wave away. |
| Levels 4-5 | Heimerdinger | Three banked charges plus the CH-3X center-stun make her walk-ups suicidal whenever her Permafrost is on cooldown. |
| Level 6 | Heimerdinger | UPGRADE!!! on a wider grenade or super-turret out-zones her Glacial Prison engage — punish the moment her R is down. |
| First item | Sejuani | She soaks turret beams with tank items and Arctic-Assault-dashes through the nest to land her CC chain on you. |
| Two+ items | Sejuani | Percent-MAX-HP Winter's Wrath plus a Sunfire/Liandry frontline shred your low HP while she chain-CCs the immobile yordle — she out-scales the nest. |
Sejuani opens by stacking Frost with a Winter's Wrath arc and detonating Permafrost for a slow-then-stun the moment you step up — at Level 1 you have one turret and no grenade, so concede that contact window and last-hit from max range. By Level 2-3 a second turret with the slowing beam lets you contest, but respect her kit: she stacks Frost on your tiny HP bar, chunks you with percent-MAX-HP W, and Permafrost-stuns you out of the nest. Bait the Permafrost with a turret beam before you ever commit a grenade.
The full Heimerdinger 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.
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Playing the other side? Sejuani vs Heimerdinger guide →
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