Orianna vs Cassiopeia — Mid Lane Matchup Guide

How to win lane as Orianna against Cassiopeia · 54.01% win rate over 611 Emerald+ games · Updated 2026-07-27

Verdict: A genuine skill matchup — the favour swings window to window (3 apiece of the 7 stages). Orianna wins 54.01% of games vs Cassiopeia in mid lane (611 Emerald+ games analysed).

Favour timeline — who owns each window

StageFavouredWhy
Level 1OriannaYour Command Attack out-ranges Cassiopeia's early Noxious Blast at level 1.
Level 2OriannaAt level 2 her mana starvation lets your poke go unpunished.
Level 3Even / skillLevel 3 evens out as her Twin Fang DoT combo comes online.
Levels 4-5CassiopeiaThrough 4-5 her Miasma zoning and Twin Fang resets out-trade you.
Level 6CassiopeiaPetrifying Gaze at 6 face-stuns you out of your Shockwave, favoring her.
First itemCassiopeiaFirst-item DoT sustain and movement speed let her kite and out-DPS you.
Two+ itemsOriannaTwo-item grouped fights favor your Shockwave engage before her DoT ramps.

Early game (levels 1–5)

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.

Read the rest of this matchup

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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Playing the other side? Cassiopeia vs Orianna guide →
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