How to win lane as Cassiopeia against Kassadin · 48.17% win rate (793 Emerald+ games, lolalytics, sampled July 2026) · Matchup data reviewed on patch 26.15
Miasma turns assassins off — ground the dash, petrify the dive, and fang the helpless body that was supposed to one-shot you.
Track: Kassadin's R — Riftwalk (5–2s cooldown). His mobility spike — the lane is decided before it scales.
Read from Cassiopeia's seat: which stage windows this plan plays for against Kassadin.
This is Cassiopeia's own plan; across 793 pooled games the lane is leaning Kassadin.
| Stage | Favoured | Why |
|---|---|---|
| Level 1 | Cassiopeia | Level 1 favors Cassiopeia since Kassadin has no ranged poke tool and must trade in melee where her Q punishes him first. |
| Level 2 | Cassiopeia | Level 2 stays lopsided as Kassadin's Q costs heavy mana while Cassiopeia's poison chips him down for free. |
| Level 3 | Cassiopeia | Level 3 continues to favor Cassiopeia because she can poke from range while Kassadin has no way to close the gap safely. |
| Levels 4-5 | Even / skill | Levels 4-5 remain a stomp since Kassadin is still mana-constrained and has no answer to sustained poison poke. |
| Level 6 | Cassiopeia | Level 6 favors Cassiopeia because Riftwalk only grants a blink, not damage, so any engage attempt walks into her stun-burst. |
| First item | Even / skill | Cassiopeia's first item widens the gap further since her poison ramp scales faster than Kassadin's early mana-hungry combo. |
| Two+ items | Even / skill | Two items in, Cassiopeia should already have a commanding lead, and her burst still outpaces Kassadin unless he's fully banked on Rift stacks. |
Kassadin is one of the weakest champions in the game before level 9-11 — no reliable ranged tool, mediocre wave clear, and mana problems from spamming Q. Poke him with Q every time he's in range and force him to use Nether Blade procs just to clear casters. Punish any Riftwalk engage attempt with your own poison and Twin Fang since he has no shield or escape until the cooldown resets. Push and deny CS aggressively — the earlier you can get him under tower struggling, the harder his scaling becomes to reach.
Pooled Emerald+ win rates from Cassiopeia's side, sampled July 2026.
The full Cassiopeia vs Kassadin 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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Kassadin, slightly — Cassiopeia wins 48.17% of 793 games; winnable with the right plan.
Mostly — Kassadin has a small statistical edge (51.83% win rate), but execution decides this lane far more than the pick does.
No — if anything Kassadin has the slight edge (Cassiopeia wins 48.17%), 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 Kassadin.
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).
Playing the other side? Kassadin vs Cassiopeia guide →
All Cassiopeia mid lane matchups →
More Cassiopeia mid lane matchups: vs Hwei · vs Irelia · vs Karma · vs Katarina · vs LeBlanc · vs Lissandra
Also played in: Top Lane