How to win lane as Cassiopeia against Vex · 50% win rate over 380 Emerald+ games · Updated 2026-07-27
| Stage | Favoured | Why |
|---|---|---|
| Level 1 | Even / skill | Vex's fear-and-slow combo punishes Cassiopeia's lack of mobility in early poke exchanges |
| Level 2 | Even / skill | Vex continues to control the trade pattern by forcing Cassiopeia to play passively around Gloom stacks |
| Level 3 | Even / skill | Vex's burst window still outpaces Cassiopeia's ramping damage before key items come online |
| Levels 4-5 | Cassiopeia | Cassiopeia's Petrifying Gaze finally locks Vex down for a full combo she cannot escape |
| Level 6 | Even / skill | Vex's fear-lockdown remains a threat in skirmishes even after Cassiopeia's ultimate is available |
| First item | Cassiopeia | Cassiopeia's Liandry's DoT and Twin Fang execute begin to outscale Vex's burst-only kit |
| Two+ items | Cassiopeia | Cassiopeia's scaling damage output overwhelms Vex's all-in potential in extended late-game fights |
Vex's kit is built to punish immobile poke mages exactly like you — Personal Space fears you if you don't create distance, and Mistral Bolt's slow lets her follow up before you can escape. Play patient through levels 1-2, focus on last-hitting safely, and don't contest extended trades until you have Miasma and Twin Fang both up to answer her aggression.
The full Cassiopeia vs Vex 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? Vex vs Cassiopeia guide →
All Cassiopeia mid lane matchups →