How to win lane as Cassiopeia against Vayne · 47% win rate (417 Emerald+ games, lolalytics, sampled July 2026) · Matchup data reviewed on patch 26.15
Miasma is the anti-dash button — ground her engage and the dive kit becomes a farm bot.
Track: Vayne's E — Condemn (20–12s cooldown). Wall-stun — never fight her with terrain at your back.
Read from Cassiopeia's seat: which stage windows this plan plays for against Vayne.
This is Cassiopeia's own plan; across 417 pooled games the lane is leaning Vayne.
| Stage | Favoured | Why |
|---|---|---|
| Level 1 | Even / skill | Level 1 is a genuine coin-flip — with one ability and no poison primed yet, your Twin Fang has nothing to refund off, so it comes down to who respects range and last-hits cleaner. |
| Level 2 | Cassiopeia | Q into E comes online — prime her with Noxious Blast then Twin Fang the poisoned target for the refund; the poison ticks even through her tumble, a trade her single dash can't fully answer. |
| Level 3 | Cassiopeia | Your full Q-to-E combo plus Q's champion-hit move speed lets you chain damage and stick to her faster than her tumble kite can reset the distance. |
| Levels 4-5 | Cassiopeia | Ranks in Q and E let you chain Twin Fangs off your poison and win any extended trade before she lands three autos for a Silver Bolts proc, and W Miasma grounds her escape. |
| Level 6 | Cassiopeia | Petrifying Gaze turns a won poke trade into a kill — the facing-stun ignores her tumble invis, so you can catch her stepping up to CS and Twin Fang her down. |
| First item | Cassiopeia | Malignance or early Liandry's plus your boots-free Serpentine Grace move speed outpaces her tumble kite — your dominant snowball window before she spikes. |
| Two+ items | Vayne | At 2+ items her Silver Bolts third hit is percent-max-HP true damage your resistance-light AP build cannot answer, and Final Hour's Tumble invisibility resets every trade. |
Level 1 is a true coin-flip — neither of you wants to commit with one ability, but she can chip you with autos at her range while your Q poison and E refund aren't online yet, so last-hit safe and don't walk into auto range for free. The lane swings the second you hit level 2-3 with Q into E: throw Noxious Blast on her or the wave, then Twin Fang the poisoned target for the cooldown-and-mana refund — a trade her single tumble cannot fully dodge because the poison ticks even if she sidesteps the Twin Fang. Do not chase her into invis after a tumble; you waste your E with nothing primed. Instead bait the tumble out, step up while it's down, and re-prime with Q.
Pooled Emerald+ win rates from Cassiopeia's side, sampled July 2026.
The full Cassiopeia vs Vayne 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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Vayne, slightly — Cassiopeia wins 47% of 417 games; winnable with the right plan.
Mostly — Vayne has a small statistical edge (53% win rate), but execution decides this lane far more than the pick does.
No — if anything Vayne has the slight edge (Cassiopeia wins 47%), though it stays close.
Cassiopeia takes Conqueror on the Precision tree with Presence of Mind, Legend: Haste and Last Stand, and Sorcery secondary (Manaflow Band and Transcendence) vs Vayne.
Start Doran's Ring + 2 Health Potions and back for Tear of the Goddess + Dark Seal (≈800g). Build Seraph's Embrace / Liandry's Torment first, then Rylai's Crystal Scepter, with No boots — bank the gold into Zhonya's earlier.
Playing the other side? Vayne vs Cassiopeia guide →
All Cassiopeia top lane matchups →
More Cassiopeia top lane matchups: vs Trundle · vs Tryndamere · vs Urgot · vs Vladimir · vs Volibear · vs Warwick