How to win lane as Cassiopeia against Irelia · 48.05% win rate (1,311 Emerald+ games, lolalytics, sampled July 2026) · Matchup data reviewed on patch 26.15
She wants to run you down — grounded fighters don't run anywhere, and petrified ones don't fight.
Track: Irelia's E — Flawless Duet (16–10s cooldown). Her stun setup — dodge it and the dive falls apart.
Read from Cassiopeia's seat: which stage windows this plan plays for against Irelia.
This is Cassiopeia's own plan; across 1,311 pooled games the lane is leaning Irelia.
| Stage | Favoured | Why |
|---|---|---|
| Level 1 | Even / skill | Level 1 is a coinflip skill matchup since neither champion has a clear lane-defining tool yet, so early trades depend on who plays position better. |
| Level 2 | Irelia | Irelia gets a slight edge on level 2 from her Q reset threat letting her punish any minion-adjacent positioning. |
| Level 3 | Irelia | By level 3 Irelia's dash-reset chain lets her force extended trades that Cassiopeia's kite can't fully escape yet. |
| Levels 4-5 | Cassiopeia | Levels 4-5 swing to Cassiopeia as Miasma comes online and starts denying the minion resets Irelia depends on. |
| Level 6 | Cassiopeia | Level 6 favors Cassiopeia since her R threatens lethal burst on a stunned or misplaying Irelia, while Irelia's ult requires specific terrain setup to land. |
| First item | Cassiopeia | Cassiopeia's first item poison ramp outpaces Irelia's flat AD scaling and sustain from Q resets. |
| Two+ items | Cassiopeia | Two items in, Cassiopeia's poke, zone control, and execute threat fully outclass what Irelia can force through even with items. |
Irelia's early trades revolve around Q resets through minions, so she can chain dashes onto you even without flash. Your only answer at level 1-2 is poking with Q from max range and never standing near a minion she can reset off of. Ward the wave state — if she's pushing hard, back off rather than trade in melee where her passive shield and Q damage punish you. Landing early Q poison lets your E threaten real damage if she still commits.
Pooled Emerald+ win rates from Cassiopeia's side, sampled July 2026.
The full Cassiopeia vs Irelia 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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Irelia, slightly — Cassiopeia wins 48.05% of 1,311 games; winnable with the right plan.
Mostly — Irelia has a small statistical edge (51.95% win rate), but execution decides this lane far more than the pick does.
No — if anything Irelia has the slight edge (Cassiopeia wins 48.05%), though it stays close.
Cassiopeia takes Conqueror on the Precision tree with Presence of Mind, Legend: Haste and Last Stand, and Sorcery secondary (Manaflow Band and Transcendence) vs Irelia.
Start Doran's Ring + 2 Health Potions and back for Oblivion Orb (≈800g) — cuts her sustain. Build Seraph's Embrace first, then Liandry's Torment, with No boots — passive grants scaling move speed (extra item slot).
Playing the other side? Irelia vs Cassiopeia guide →
All Cassiopeia mid lane matchups →
More Cassiopeia mid lane matchups: vs Fizz · vs Galio · vs Hwei · vs Karma · vs Kassadin · vs Katarina
Also played in: Top Lane