How to win lane as Illaoi against Cassiopeia · 50.88% win rate (340 Emerald+ games, lolalytics, sampled July 2026) · Matchup data reviewed on patch 26.15
She kites you out — survive, then rip her spirit on the Miasma cooldown and slam the field.
Track: Cassiopeia's W — Miasma (24–16s cooldown). Grounds you — dashes and movement abilities are disabled inside it.
Read from Illaoi's seat: which stage windows this plan plays for against Cassiopeia.
| Stage | Favoured | Why |
|---|---|---|
| Level 1 | Cassiopeia | Cassiopeia's Q poke and W zone win the level-1 range battle. |
| Level 2 | Even / skill | Skill at 2: her poke vs your incoming gap-close roughly cancel. |
| Level 3 | Illaoi | W Harsh Lesson closes the gap and lets you punish from 3. |
| Levels 4-5 | Illaoi | A landed E on an escape-less Cassiopeia beats her poke at 4-5. |
| Level 6 | Even / skill | Skill at 6: her R stun and your R wall threaten each other equally. |
| First item | Even / skill | Skill first item: the trade hinges on closing before her E stacks. |
| Two+ items | Cassiopeia | Late, full-AP poke and R Petrifying Gaze lock you out of fights. |
Cassiopeia pokes you down at level 1 with Q Noxious Blast before you can reach her, and her W Miasma zones your tentacle plants, so the opening favors her ranged harass.
Pooled Emerald+ win rates from Illaoi's side, sampled July 2026.
The full Illaoi 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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Illaoi, slightly — a 50.88% win rate edge over 340 games; execution can flip it.
Mostly — Illaoi has a small statistical edge (50.88% win rate), but execution decides this lane far more than the pick does.
Not a hard counter — Illaoi has a slight edge (50.88% win rate), and play quality decides the rest.
Illaoi takes Grasp of the Undying on the Resolve tree with Demolish, Second Wind and Overgrowth, and Precision secondary (Triumph and Legend: Haste) vs Cassiopeia.
Start Doran's Shield + Health Potion (vs her poke) and back for Core component + boots (≈1300g). Build Iceborn Gauntlet (the slow makes tentacles land) first, then Sterak's Gage, with Mercury's Treads.
Playing the other side? Cassiopeia vs Illaoi guide →
All Illaoi top lane matchups →
More Illaoi top lane matchups: vs Ambessa · vs Aurora · vs Camille · vs Cho'Gath · vs Darius · vs Dr. Mundo