How to win lane as Teemo against Cassiopeia · 45.96% win rate (322 Emerald+ games, lolalytics, sampled July 2026) · Matchup data reviewed on patch 26.15
Weather the poke — blind her Miasma and poison every path she walks.
Track: Cassiopeia's W — Miasma (24–16s cooldown). Grounds you — dashes and movement abilities are disabled inside it.
Read from Teemo's seat: which stage windows this plan plays for against Cassiopeia.
This is Teemo's own plan; across 322 pooled games the lane is leaning Cassiopeia.
| Stage | Favoured | Why |
|---|---|---|
| Level 1 | Cassiopeia | Noxious Blast gives her a level-1 range advantage and movement speed to chase, and blind does nothing to an all-ability kit — respect her first trade window and last-hit safely. |
| Level 2 | Even / skill | Miasma and Noxious Blast are both single-target skill shots at level 2 — dodge one and you win the brief skirmish, but if she lands both together she wins the trade, making this a genuine Skill window. |
| Level 3 | Teemo | Your E poison stacks enough to beat her sustained DPS between Noxious Blast casts — but step out of her poison clouds first, because a poisoned target is what makes Twin Fang hurt. |
| Levels 4-5 | Teemo | Leaving her poison clouds guts her damage pattern: an unpoisoned target takes reduced Twin Fang damage and gives her no heal. Stack E poison and mushroom the tribush to deny disengage. |
| Level 6 | Teemo | Noxious Trap placements at level 6 seal the river entrances and tribush she relies on for roam angles — she must walk through your shroom field or forfeit map pressure, and her no-boots passive cannot outrun slow stacks. |
| First item | Teemo | Liandry's on top of your E poison and mushrooms means every trade she takes during Miasma's 24-second downtime deals her 35-40% of her HP in ticking damage; she cannot reset safely enough to contest the lane. |
| Two+ items | Teemo | Shadowflame and Nashor's Tooth turn Twin Fang into a DPS machine she fires inside Miasma while it heals her back — your HP pool cannot outlast that, so carry Grievous Wounds and never duel her on open terrain at this stage. |
Cassiopeia level 1 is dangerous — she hits Noxious Blast at range, stacks poison immediately, and you cannot run without eating Twin Fang follow-ups. Do not auto-trade into her level 1; last-hit at the edge of your AA range. Understand early that Blinding Dart is close to worthless here: her damage is entirely abilities, and blind only makes basic attacks miss. What actually cuts Twin Fang is leaving her poison — it deals increased damage, and heals her, only against a poisoned target. At level 2 your E stacks start trading blow-for-blow, and her one kill threat still needs Miasma, a ground she has to predict and you can simply walk out of.
Pooled Emerald+ win rates from Teemo's side, sampled July 2026.
The full Teemo 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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Cassiopeia, slightly — Teemo wins 45.96% of 322 games; winnable with the right plan.
Mostly — Cassiopeia has a small statistical edge (54.04% win rate), but execution decides this lane far more than the pick does.
No — if anything Cassiopeia has the slight edge (Teemo wins 45.96%), though it stays close.
Teemo takes Press the Attack on the Precision tree with Triumph, Legend: Alacrity and Cut Down, and Inspiration secondary (Biscuit Delivery and Cosmic Insight) vs Cassiopeia.
Start Doran's Ring + 2 Health Potions and back for Core component + boots (≈1300g). Build Nashor's Tooth (on-hit poison) first, then Liandry's Torment, with Mercury's Treads.
Playing the other side? Cassiopeia vs Teemo guide →
All Teemo top lane matchups →
More Teemo top lane matchups: vs Ambessa · vs Aurora · vs Camille · vs Cho'Gath · vs Darius · vs Dr. Mundo