How to win lane as Orianna against Cassiopeia · 53.41% win rate (1,129 Emerald+ games, lolalytics, sampled July 2026) · Matchup data reviewed on patch 26.15
The cleanest control mirror in the game — ball placement against her cooldowns, and the better-positioned sphere wins.
Track: Cassiopeia's W — Miasma (24–16s cooldown). Grounds you — dashes and leaps are disabled inside it.
Read from Orianna's seat: which stage windows this plan plays for against Cassiopeia.
This is Orianna's own plan; across 1,129 pooled games the lane is leaning Orianna.
| Stage | Favoured | Why |
|---|---|---|
| Level 1 | Orianna | Your Command: Attack out-ranges Cassiopeia's early Noxious Blast at level 1. |
| Level 2 | Orianna | At level 2 her mana starvation lets your poke go unpunished. |
| Level 3 | Even / skill | Level 3 evens out as her Twin Fang DoT combo comes online. |
| Levels 4-5 | Cassiopeia | Through 4-5 her Miasma zoning and Twin Fang resets out-trade you. |
| Level 6 | Cassiopeia | Petrifying Gaze at 6 face-stuns you out of your Shockwave, favoring her. |
| First item | Cassiopeia | First-item DoT sustain and movement speed let her kite and out-DPS you. |
| Two+ items | Even / skill | Two-item grouped fights favor your Shockwave engage before her DoT ramps. |
You own levels 1-2: your Command: Attack out-ranges Cassiopeia before she can safely land Noxious Blast, and she's mana-starved early so every ball-Q you land goes unpunished while she scrapes for last-hits. Track Miasma (W) is 24s at rank 1 and 16s maxed; it grounds and slows, and her whole trade lives inside it — step up on its downtime. Cassiopeia snowballs off Twin Fang procs on her Noxious Blast/Miasma DoT; keep the wave moving so she can't free-cast Q on you, and don't walk into her Miasma slow puddle where she chunks you.
Pooled Emerald+ win rates from Orianna's side, sampled July 2026.
The full Orianna 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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Orianna, slightly — a 53.41% win rate edge over 1,129 games; execution can flip it.
Mostly — Orianna has a small statistical edge (53.41% win rate), but execution decides this lane far more than the pick does.
Not a hard counter — Orianna has a slight edge (53.41% win rate), and play quality decides the rest.
Orianna 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 Luden's Companion first, then Shadowflame, with Sorcerer's Shoes / Mercury's Treads.
Playing the other side? Cassiopeia vs Orianna guide →
All Orianna mid lane matchups →
More Orianna mid lane matchups: vs Aurora · vs Azir · vs Brand · vs Diana · vs Ekko · vs Fizz