How to win lane as Cassiopeia against Mordekaiser · 59.32% win rate (118 Emerald+ games, lolalytics, sampled July 2026) · Matchup data reviewed on patch 26.15
A DPS check he fails — poison every step-up, ground his approach, and E-spam him off the wave.
Track: Mordekaiser's R — Realm of Death (140–100s cooldown). The isolated 1v1 is his whole kill threat — track it always.
Read from Cassiopeia's seat: which stage windows this plan plays for against Mordekaiser.
| Stage | Favoured | Why |
|---|---|---|
| Level 1 | Even / skill | Both of you are weak at level 1 with one ability and no poison stacking — last-hit at Q range and stay clear of his E pull. |
| Level 2 | Mordekaiser | At level 2 his E pull into an isolated Obliterate plus a fresh Indestructible shield out-trades your un-ramped Twin Fang. |
| Level 3 | Cassiopeia | Your full Q-to-E chain comes online — prime with Noxious Blast and spam refunded Twin Fangs to out-DPS his shield in any extended trade. |
| Levels 4-5 | Cassiopeia | Ranks in Q and E let you chain Twin Fangs while your move speed kites his dashless frame — you win every drawn-out fight. |
| Level 6 | Mordekaiser | Realm of Death (140s) drags you into an isolated 1v1 and steals your AP and resistances, where a juggernaut beats a caster. |
| First item | Even / skill | Malignance or early Liandry's plus your Serpentine-Grace move speed makes you a dominant lane DPS — poke him off the wave and kite his slow approach. |
| Two+ items | Cassiopeia | Poisoned Twin Fangs melt his Indignation shield faster than it re-forms while you stay out of his melee range — you out-DPS the juggernaut outright. |
Level 1 is even — he has one ability and so do you, no poison stacking yet, so just last-hit at the edge of Q range and stay outside his E (Death's Grasp) pull. Level 2 tips to him: with only Q and E at one rank each, your poison hasn't ramped, so if he lands E and an isolated Q (Obliterate) he can shield through your single Twin Fang and win that burst. Stand next to a minion and Obliterate hits for less. Once you hit level 3 the lane flips — a full Q-into-E chain plus your move-speed kiting lets you prime him and spam refunded Twin Fang faster than Indestructible re-forms. The early game is about not eating a blind E pull: bait it, sidestep, and never trade into a fresh shield.
Pooled Emerald+ win rates from Cassiopeia's side, sampled July 2026.
The full Cassiopeia vs Mordekaiser 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 — a 59.32% win rate vs Mordekaiser in top lane over 118 games is a real advantage.
Not really — Cassiopeia holds a real statistical advantage (59.32% win rate), so Mordekaiser is the one working uphill.
Statistically yes — Cassiopeia counters Mordekaiser in top lane, winning 59.32% of 118 Emerald+ games.
Cassiopeia takes Conqueror on the Precision tree with Presence of Mind, Legend: Haste and Last Stand, and Sorcery secondary (Manaflow Band and Transcendence) vs Mordekaiser.
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 MR via Rookern later.
Playing the other side? Mordekaiser vs Cassiopeia guide →
All Cassiopeia top lane matchups →
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