How to win lane as Sion against Heimerdinger · 53.09% win rate (921 Emerald+ games, lolalytics, sampled July 2026) · Matchup data reviewed on patch 26.15
His turrets out-poke you — build MR, charged Q off nest.
Track: Heimerdinger's E — CH-2 Electron Storm Grenade (11s cooldown). His self-peel stun. Dodge it.
Read from Sion's seat: which stage windows this plan plays for against Heimerdinger.
| Stage | Favoured | Why |
|---|---|---|
| Level 1 | Sion | At level 1 he has one turret at most — a fully charged Q from brush hits before his nest is established and forces an early recall or burnt summoners. |
| Level 2 | Even / skill | His nest is half-built and you both have two to three abilities — neither side can force a decisive trade, so respect the turret poke and farm even. |
| Level 3 | Even / skill | His H-28 G turret nest covers the wave now, and CH-2 Electron Storm Grenade stuns on a flat 11s at every rank — charge your Q only inside that gap. |
| Levels 4-5 | Heimerdinger | Three turrets plus W rocket poke from safety is his peak — you cannot charge Q through beam fire without your W-shield melting before you reach him. |
| Level 6 | Sion | Unstoppable Onslaught is literally unstoppable — his CH-2 Grenade cannot interrupt the charge, and you arrive already in melee range with E armor-shred ready. |
| First item | Heimerdinger | His Luden's or Shadowflame spike means turrets now shred your W-shield in seconds — you need a perfect angle and grenade tracked before you can dive safely. |
| Two+ items | Even / skill | Both of you have full builds — your HP passive and W-shield are enormous but his turret nest plus UPGRADE!! grenade can lock you down; splitpush and angle your R rather than straight-walk his setup. |
At level 1 Heimerdinger cannot place his full nest yet — one turret deals modest damage and your Q charge from the brush is a genuine threat he must respect. Walk up, bait him into placing a single turret, then slow-charge Q behind the wave so the slam hits him, not his machine. If you land the knockup, his nest resets and you win the first sixty seconds of the lane outright. Don't take the poke war from open ground — the moment you telegraph a Q charge he'll E-stun you out of it and punish through his turret.
Pooled Emerald+ win rates from Sion's side, sampled July 2026.
The full Sion 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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Sion, slightly — a 53.09% win rate edge over 921 games; execution can flip it.
Mostly — Sion has a small statistical edge (53.09% win rate), but execution decides this lane far more than the pick does.
Not a hard counter — Sion has a slight edge (53.09% win rate), and play quality decides the rest.
Sion takes Grasp of the Undying on the Resolve tree with Demolish, Second Wind and Overgrowth, and Precision secondary (Triumph and Legend: Haste) vs Heimerdinger.
Start Doran's Shield + Health Potion and back for Core component + boots (≈1300g). Build Heartsteel (W + passive love HP) first, then Warmog's Armor / Thornmail, with Mercury's Treads.
Playing the other side? Heimerdinger vs Sion guide →
All Sion top lane matchups →
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