Cassiopeia vs Syndra — Mid Lane Matchup Guide

How to win lane as Cassiopeia against Syndra · 45.6% win rate over 1,568 Emerald+ games · Updated 2026-07-27

Verdict: Closer than it looks — Cassiopeia owns 7 of the 7 game windows, but the win rate still favours Syndra: you have to convert those windows or the game slips away. Cassiopeia wins 45.6% of games vs Syndra in mid lane (1,568 Emerald+ games analysed).

Favour timeline — who owns each window

StageFavouredWhy
Level 1CassiopeiaHer stun-combo requires setup that you can poke through, so you win trades from level 1
Level 2CassiopeiaSphere-stacking near you is a real threat but manageable with denial, keeping you ahead
Level 3CassiopeiaContinued advantage as your poison DoT punishes her positioning more than her combo punishes yours
Levels 4-5CassiopeiaSame trend — you remain clearly favored through the mid-game skirmish window
Level 6CassiopeiaHer Ult threat doesn't offset how much your sustained poke already wears her down
First itemCassiopeiaYour completed DoT item clearly outpaces her burst-reliant combo kit
Two+ itemsCassiopeiaFull-build Cassiopeia kites and shuts down her stun setup entirely with R

Early game (levels 1–5)

You're ahead in this matchup from the start — Syndra's stun-combo is scary in theory but her spheres are slow to gather and telegraphed, so as long as you don't stand still near stacked spheres, your poke and sustained damage win trades.

Read the rest of this matchup

The full Cassiopeia vs Syndra 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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Related guides

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