Jayce vs Mordekaiser Counter Pick

Mordekaiser spends no mana. His resource is a shield built from damage dealt and taken through Indestructible, which he can consume as a heal, so his sustain does not decay across a long lane phase the way a mana pool does. Even so, 984 games on patch 16.13.1 give Jayce 54.2 percent.

Range explains most of it. Cannon stance fires Shock Blast from well outside the 175 units Mordekaiser needs for Obliterate, and Death’s Grasp has to pull a target in before Darkness Rise can accumulate its three hits. Every trade he wins requires him to have closed the gap first. His damage is magic, meeting 30 base magic resistance on the other side, so the armor Jayce grows to 107 by level 18 is largely irrelevant while an early magic resistance purchase is not. Health favours Mordekaiser at level one, 645 against 590, then flips by eighteen, 2,413 against 2,443. Realm of Death removes Jayce from every outside source of help for its duration and steals a portion of his stats, making it the one cooldown worth tracking above all others. Obliterate also deals more damage when it strikes a single enemy, so isolation is his win condition and crowding the fight is a defensive measure. Movement speed is identical at 335, which leaves the stance swap as the only source of separation.