How to win lane as Aurelion Sol against Cassiopeia · 48.24% win rate (427 Emerald+ games, lolalytics, sampled July 2026) · Matchup data reviewed on patch 26.15
She wins lane, you win the game — every minute you survive with stacks intact is a minute she wasted winning a lane that doesn't matter.
Track: Cassiopeia's W — Miasma (24–16s cooldown). Grounds you — dashes and leaps are disabled inside it.
Read from Aurelion Sol's seat: which stage windows this plan plays for against Cassiopeia.
| Stage | Favoured | Why |
|---|---|---|
| Level 1 | Cassiopeia | Cassiopeia's Noxious Blast and Miasma poke outclass your early trading before Q ramps up |
| Level 2 | Cassiopeia | Poison stacking and zone denial continue to punish any proximity you attempt |
| Level 3 | Cassiopeia | Miasma-set-up trades keep compounding as her damage output outpaces your survivability |
| Levels 4-5 | Even / skill | Same poke-and-zone dynamic persists through the wave-clear stretch of the lane |
| Level 6 | Even / skill | Petrifying Gaze only stuns enemies facing her — turn away and Falling Star answers it |
| First item | Even / skill | Rod of Ages gives the HP to survive Twin Fang chip while your E clears from 750 |
| Two+ items | Aurelion Sol | Full-item Aurelion Sol's range and burst finally out-scale her poison-execute kit in fights |
Cassiopeia's Noxious Blast is 850 range on a 3.5s cooldown and Miasma grounds Astral Flight outright, so she wins every extended trade before your levels arrive. Farm the back line with Q from 750, drop the black hole (E) on the wave rather than stepping up, and never stand in her poison. Track Miasma (W) is 24s at rank 1, 16s at rank 5, and grounding disables Astral Flight outright — step up only when it is down.
Pooled Emerald+ win rates from Aurelion Sol's side, sampled July 2026.
The full Aurelion Sol 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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Cassiopeia, slightly — Aurelion Sol wins 48.24% of 427 games; winnable with the right plan.
Mostly — Cassiopeia has a small statistical edge (51.76% win rate), but execution decides this lane far more than the pick does.
No — if anything Cassiopeia has the slight edge (Aurelion Sol wins 48.24%), though it stays close.
Aurelion Sol takes Arcane Comet on the Sorcery tree with Manaflow Band, Transcendence and Scorch, and Inspiration secondary (Biscuit Delivery and Cosmic Insight) vs Cassiopeia.
Start Doran's Ring + 2 Health Potions and back for Oblivion Orb (≈800g) — cuts her sustain. Build Rod of Ages first, then Archangel's Staff, with Sorcerer's Shoes / Mercury's Treads.
Playing the other side? Cassiopeia vs Aurelion Sol guide →
All Aurelion Sol mid lane matchups →
More Aurelion Sol mid lane matchups: vs Aurora · vs Azir · vs Brand · vs Diana · vs Ekko · vs Fizz