Mahito, The Curse of Man

Deathtouch

When Mahito, Curse of Man enter the battlefield, all creature you control gain "{t}: Sacrifice this creature, create X Human soul tokens equal to creature's power and toughness combined."

Whenever a creature dies to Mahito, create X Human soul tokens, where X is power and toughness combined

{p/b}: Sacrifice X Human soul tokens, create a Polymorphic Soul Isomer creature with X/1