How to win lane as Cassiopeia against Olaf · 43.9% win rate (656 Emerald+ games, lolalytics, sampled July 2026) · Matchup data reviewed on patch 26.15
Miasma is the anti-dash button — ground his engage and the dive kit becomes a farm bot.
Track: Olaf's Q — Undertow (9s cooldown). Axe slows let him reach you — stand on the pickup spot to deny resets.
Read from Cassiopeia's seat: which stage windows this plan plays for against Olaf.
| Stage | Favoured | Why |
|---|---|---|
| Level 1 | Olaf | Olaf owns level 1: Undertow slows you and Reckless Swing's true damage ignores your nonexistent resistances while you have one ability and no poison ramping. |
| Level 2 | Even / skill | Closer at 2 — you can prime-and-Twin-Fang for a real trade, but his axe slow and true-damage poke still match it, so it is a skill trade. |
| Level 3 | Cassiopeia | You own 3: a full Q-prime into Twin Fang plus your boots-free kiting lets you out-DPS his sustain in any extended trade you control. |
| Levels 4-5 | Even / skill | Even through 4-5 — your Twin Fang chain wins a kited poke war, but one landed Undertow lets his Reckless Swing burst you back, so it stays a skill check. |
| Level 6 | Even / skill | Skill at 6 — Ragnarok makes Olaf disable-immune so your stun whiffs, but it blocks no slows: Miasma still kites him out. |
| First item | Even / skill | Your first-item poke spike pulls him off the wave while Undertow is down, but his bruiser items and R lifesteal keep it even when he lands axes. |
| Two+ items | Even / skill | Late stays a coinflip: you out-shred him if you kite the axe, but you have no resistances and his true-damage CC-immune dive can delete you first. |
Olaf's first two levels are scary here: his Undertow axe slows you even through your level-scaled move speed, and Reckless Swing chunks you with true damage your zero resistances do nothing about — all while you have one ability and no poison ramping. Do not facecheck his axe range early; last-hit at max distance and step sideways to dodge Undertow, since a missed axe leaves him slowed with no slow landed on you. Your turn comes at 3: with Q and E ranked you prime with Noxious Blast and chain Twin Fang, and because you buy no boots your innate move speed lets you kite the axe in a poke war his early sustain cannot fully heal.
Pooled Emerald+ win rates from Cassiopeia's side, sampled July 2026.
The full Cassiopeia vs Olaf 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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Olaf — Cassiopeia wins only 43.9% of 656 games, so Cassiopeia plays this as the disadvantaged side.
Not really — Olaf holds a real statistical advantage (56.1% win rate), so Cassiopeia is the one working uphill.
No — Olaf counters Cassiopeia (Cassiopeia wins only 43.9% of games). Play it as the disadvantaged side and lean on the windows in the plan.
Cassiopeia takes Conqueror on the Precision tree with Presence of Mind, Legend: Haste and Last Stand, and Sorcery secondary (Manaflow Band and Transcendence) vs Olaf.
Start Doran's Ring + 2 Health Potions and back for Oblivion Orb (≈800g) — cuts his healing. 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? Olaf vs Cassiopeia guide →
All Cassiopeia top lane matchups →
More Cassiopeia top lane matchups: vs Nasus · vs Nautilus · vs Neeko · vs Ornn · vs Pantheon · vs Poppy