Heimerdinger vs Cassiopeia — Top Lane Matchup Guide

How to win lane as Heimerdinger against Cassiopeia · 61.9% win rate (105 Emerald+ games, lolalytics, sampled July 2026) · Matchup data reviewed on patch 26.15

Verdict: Heimerdinger is favoured — 61.9% win rate over 105 games.

At a glance

Weather the poke — nest up and stun her Miasma dive.

Track: Cassiopeia's W — Miasma (24–16s cooldown). Grounds you — dashes and movement abilities are disabled inside it.

Do

  • Keep 3 turrets between you
  • E-stun when Miasma is down
  • Rocket the all-in

Don't

  • Fight away from the nest
  • Drop turrets in one sweep range
  • Waste E off-engage

Runes & build vs Cassiopeia

Start
Doran's Ring + 2 Health Potions
First back
Core component + boots (≈1300g)
First item
Liandry's Torment (turret burn)
Then
Rylai's Crystal Scepter
Boots
Mercury's Treads
Runes
Arcane Comet (Sorcery): Manaflow Band, Transcendence, Scorch · Inspiration: Biscuit Delivery, Cosmic Insight · Shards: Adaptive Force, Adaptive Force, Magic Resist

Favour timeline — the windows in Heimerdinger's game plan

Read from Heimerdinger's seat: which stage windows this plan plays for against Cassiopeia.

StageFavouredWhy
Level 1HeimerdingerCassio 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 2Even / skillTwo turrets start to zone her, but her Q poke and Twin Fang (E) ticks trade evenly through the nest until your CH-2 stun is online — neither side commits cleanly yet.
Level 3Even / skillYou'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 4-5CassiopeiaThree banked turret charges plus the CH-2 direct-hit stun make any Twin Fang dive into the turret line suicidal — this is my single strongest zoning window in the lane.
Level 6CassiopeiaPetrifying Gaze is 825 range and stuns anyone facing her — an immobile low-HP yordle frozen inside her Miasma cloud simply dies, and I have no dash to break it.
First itemEven / skillMy Liandry's plus a super-turret out-sieges her first item, and Grievous Wounds cuts the Twin Fang healing that carries her through long trades.
Two+ itemsHeimerdingerShe must walk into the nest to matter in a teamfight, and your super-turret plus a CH-2 direct hit delete any Cassio who commits onto your architecture.

How to beat Cassiopeia as Heimerdinger: the early game

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.

Hardest and easiest matchups for Heimerdinger in top lane

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

Hardest

Easiest

Read the rest of this matchup

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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Common questions

Who wins Heimerdinger vs Cassiopeia in top lane?

Heimerdinger — a 61.9% win rate vs Cassiopeia in top lane over 105 games is a real advantage.

Is Heimerdinger vs Cassiopeia a skill matchup?

Not really — Heimerdinger holds a real statistical advantage (61.9% win rate), so Cassiopeia is the one working uphill.

Does Heimerdinger counter Cassiopeia?

Statistically yes — Heimerdinger counters Cassiopeia in top lane, winning 61.9% of 105 Emerald+ games.

What runes does Heimerdinger take vs Cassiopeia?

Heimerdinger takes Arcane Comet on the Sorcery tree with Manaflow Band, Transcendence and Scorch, and Inspiration secondary (Biscuit Delivery and Cosmic Insight) vs Cassiopeia.

What should Heimerdinger build vs Cassiopeia?

Start Doran's Ring + 2 Health Potions and back for Core component + boots (≈1300g). Build Liandry's Torment (turret burn) first, then Rylai's Crystal Scepter, with Mercury's Treads.

Related guides

Playing the other side? Cassiopeia vs Heimerdinger guide →
All Heimerdinger top lane matchups →

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