Vex vs Cassiopeia — Mid Lane Matchup Guide

How to win lane as Vex against Cassiopeia · 58.13% win rate over 406 Emerald+ games · Updated 2026-07-27

Verdict: Vex is favoured — Vex owns 5 of the 7 game windows to Cassiopeia's 2. Vex wins 58.13% of games vs Cassiopeia in mid lane (406 Emerald+ games analysed).

Favour timeline — who owns each window

StageFavouredWhy
Level 1VexAt level 1 you out-range Cass, who leans on Q mainly for movement, so you win the poke.
Level 2VexAt 2 your empowered Q and W burst beat her before Miasma and E-sustain exist.
Level 3VexBy 3 you still dictate range and punish her short Noxious Blast walk-ups.
Levels 4-5CassiopeiaAt 4-5 her Miasma grounds you and Twin Fang sustain flips extended trades to Cass.
Level 6VexYour level 6 R is a hard pick on a dash-less target, swinging the ult window back to you.
First itemCassiopeiaHer first-item tear spike makes Twin Fang out-DPS you in any grounded fight, favouring Cass.
Two+ itemsVexTwo items in your R burst and shield delete her before Twin Fang ramps, restoring your edge.

Early game (levels 1–5)

You have the range and burst edge at levels 1-3 — she's stuck using Q (Noxious Blast) mostly for movespeed and can't punch back, so land empowered Q and W poke before her kit comes online.

Read the rest of this matchup

The full Vex 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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Related guides

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