Cassiopeia vs Orianna — Mid Lane Matchup Guide

How to win lane as Cassiopeia against Orianna · 46.59% win rate (1,129 Emerald+ games, lolalytics, sampled July 2026) · Matchup data reviewed on patch 26.15

Verdict: A close lane that leans Orianna on paper (Cassiopeia wins 46.59%), but Cassiopeia's plan below claims 3 of the 7 windows: convert them and the stats catch up to you.

At a glance

She pokes in bursts, you damage in streams — close to Q range on her cooldowns and the DPS war is no contest.

Track: Orianna's R — Command: Shockwave (110–80s cooldown). The fight-flipping wombo — track the ball position like a second enemy.

Do

  • Step forward the moment her key spell whiffs
  • Land Q, then machine-gun E while poisoned
  • Ground her retreat path with W

Don't

  • Eat poke at her max range for free
  • Walk forward with her full rotation loaded
  • Spam E unpoisoned — the mana dies fast

Runes & build vs Orianna

Start
Doran's Ring + 2 Health Potions
First back
Tear of the Goddess + Dark Seal (≈800g)
First item
Seraph's Embrace
Then
Liandry's Torment
Boots
No boots — passive move speed (slot goes to Mercury's-substitute MR if needed)
Runes
Conqueror (Precision): Presence of Mind, Legend: Haste, Last Stand · Sorcery: Manaflow Band, Transcendence · Shards: Adaptive Force, Adaptive Force, Health

Favour timeline — the windows in Cassiopeia's game plan

Read from Cassiopeia's seat: which stage windows this plan plays for against Orianna.

This is Cassiopeia's own plan; across 1,129 pooled games the lane is leaning Orianna.

StageFavouredWhy
Level 1OriannaOrianna's Command: Attack ball poke and Dissonance zoning punishes your low base HP before you have a combo to answer with
Level 2OriannaShe continues controlling the wave and poking safely with her ball, keeping you on the back foot through this stretch
Level 3Even / skillTrades even out here as your E range starts to threaten her ball positioning, but neither side has a clean window
Levels 4-5CassiopeiaYour poison stacking and combo range begin outpacing her poke damage once you have full rotation timing
Level 6CassiopeiaPetrifying Gaze now out-ranges her Shockwave setup, letting you punish overextensions decisively
First itemCassiopeiaItem power widens your DPS lead as her ball-dependent damage falls off relative to your DoT scaling
Two+ itemsEven / skillFull-build Cassiopeia out-damages Orianna in any extended fight as long as you dodge Command: Shockwave

How to beat Orianna as Cassiopeia: the early game

Orianna's ball gives her constant poke and wave control that you can't easily answer at levels 1-2 — she can zone you off CS and chip your HP from a position you can't punish yet. This continues to favor her through level 3 as she freezes the wave and keeps landing ball pokes while staying safe. It's close to even by level 4-5 once your own combo range starts threatening her ball positioning, but she still holds a slight edge in raw poke damage through this stretch.

Hardest and easiest matchups for Cassiopeia in mid lane

Pooled Emerald+ win rates from Cassiopeia's side, sampled July 2026.

Hardest

Easiest

Read the rest of this matchup

The full Cassiopeia vs Orianna 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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Common questions

Who wins Cassiopeia vs Orianna in mid lane?

Orianna, slightly — Cassiopeia wins 46.59% of 1,129 games; winnable with the right plan.

Is Cassiopeia vs Orianna a skill matchup?

Mostly — Orianna has a small statistical edge (53.41% win rate), but execution decides this lane far more than the pick does.

Does Cassiopeia counter Orianna?

No — if anything Orianna has the slight edge (Cassiopeia wins 46.59%), though it stays close.

What runes does Cassiopeia take vs Orianna?

Cassiopeia takes Conqueror on the Precision tree with Presence of Mind, Legend: Haste and Last Stand, and Sorcery secondary (Manaflow Band and Transcendence) vs Orianna.

What should Cassiopeia build vs Orianna?

Start Doran's Ring + 2 Health Potions and back for Tear of the Goddess + Dark Seal (≈800g). Build Seraph's Embrace first, then Liandry's Torment, with No boots — passive move speed (slot goes to Mercury's-substitute MR if needed).

Related guides

Playing the other side? Orianna vs Cassiopeia guide →
All Cassiopeia mid lane matchups →

More Cassiopeia mid lane matchups: vs Mel · vs Naafiri · vs Neeko · vs Pantheon · vs Qiyana · vs Ryze