How to win lane as Heimerdinger against Cassiopeia · 61.9% win rate over 105 Emerald+ games · Updated 2026-07-27
| Stage | Favoured | Why |
|---|---|---|
| Level 1 | Heimerdinger | Cassio can't buy boots and her level-1 passive move speed is tiny, so she can't sidestep your turret beam — drop the first H-28G and tax every Noxious Blast (Q) she throws to CS. |
| Level 2 | Even / skill | Two turrets start to zone her, but her Q poke and Twin Fang (E) ticks trade evenly through the nest until your CH-3X stun is online — neither side commits cleanly yet. |
| Level 3 | Even / skill | You're close to a full three-charge nest and she's close to her Miasma (W) ground game, so trades stay even and the lane hinges on who lands their cooldown first. |
| Levels 4-5 | Cassiopeia | Once Petrifying Gaze (R) is up she face-stuns you out of every grenade and turret micro, and an immobile low-HP Heimerdinger frozen in her Miasma cloud just dies. |
| Level 6 | Cassiopeia | After her first item Cassio's poke and Twin Fang sustained DPS out-trade your buildings, and Miasma grounds your spacing while she chips you from outside turret range. |
| First item | Even / skill | Your UPGRADE!!! super-turret and siege control answer her first item, but her Liandry's poke keeps the lane a coin-flip in the open — neither side owns it. |
| Two+ items | Heimerdinger | She must walk into the nest to matter in a teamfight, and your super-turret plus center-stun grenade delete any Cassio who commits onto your architecture. |
Cassio can't buy boots and her passive move speed is still tiny at level 1, so this is your window to set the lane: drop your H-28G turret on the wave and the beam plus your autos tax every CS she takes. Don't walk up to throw a W or grenade into her Noxious Blast (Q) range — she'll just poison you and chunk it back with Twin Fang (E), which hits harder on poisoned targets. Bank your turret charges, last-hit safe behind the nest, and make her pay HP and mana to farm. You out-zone a Cassio who can't yet kite freely.
The full Heimerdinger vs Cassiopeia 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? Cassiopeia vs Heimerdinger guide →
All Heimerdinger top lane matchups →