Mordekaiser vs Cassiopeia Counter Pick

Cassiopeia holds this matchup at a 42.7% return for Mordekaiser across 150 games on patch 16.13.1, and she is rated 10 for difficulty against his 4, so the execution burden sits entirely with the winning side. Serpentine Grace makes every movement speed bonus more effective on her, which is the last thing a 175-range fighter wants his opponent to have.

Why the gap never closes:

• Miasma grounds as well as slows, preventing movement abilities entirely for anyone inside its clouds.
• Twin Fang deals increased damage to poisoned targets and heals her for part of it, so attrition runs in her favour rather than toward Indestructible.
• Noxious Blast grants her movement speed whenever it hits a champion, extending a lead she already holds.
• Petrifying Gaze stuns enemies facing her, and a melee fighter walking forward is always facing her.

Mordekaiser owns the sturdier numbers, with 645 base health against 630, 37 armour against 18, and 2,413 health at level 18 against 2,296, and he spends no mana at all, using a Shield resource, so Obliterate can be thrown at the wave indefinitely. Both champions deal magic damage, which makes her thin early armour irrelevant to him and puts the whole trade on magic resist. Waiting for the clouds to be spent before stepping forward is the only version of the approach that survives contact. Kits: Mordekaiser, Cassiopeia.