Zero, Unborn Scoundrel

Master's Voice: At the beginning of your upkeep, if you control a "Vital Organ" token, sacrifice it without activating its effects. If you don't, transform Zero, Unborn Scoundrel.

Organ Harvesting: Whenever a creature dies, create a colorless artifact token named "Vital Organ" with "Sacrifice this artifact: Target creature you control gains Deathtouch and Infect until end of turn."

"The lingering essence of their simple desires—blood, brawls, brutality—will make it easier to set it in motion