Cassiopeia vs Mordekaiser Counter Pick

150 games on patch 16.13.1 give Cassiopeia a 57.3% win rate against Mordekaiser, and the kit interactions explain why fairly cleanly.

• Range advantage: Cassiopeia’s 550 range against Mordekaiser’s 175 lets her poison and retreat well before he can land Obliterate.
• Immobility: Mordekaiser has no dash or blink; his mobility comes only from Death’s Grasp, which pulls enemies to him rather than pulling him to them.
• Resource type: his Shield resource, built through his passive Darkness Rise after landing three attacks or spells, is easier to deny when Cassiopeia never lets him connect three times in a row.

His ultimate, Realm of Death, drags a single target into another dimension and steals a portion of their stats for the duration — dangerous if he manages to isolate Cassiopeia, but he first has to survive her poke to reach that point. Mordekaiser’s 108.4 magic resist at level 18 does blunt some of her damage over time, and his 2,413 health at that stage outpaces Cassiopeia’s 2,296, so a fully landed ultimate is still a real threat despite the losing overall record. Both are rated moderate difficulty in the 4-to-10 range. Full kits: Cassiopeia, Mordekaiser.