Toxrill, Essence of Uzumaki

At the beginning of each end step, put a slime counter on each creature you don't conrtol.

Creatures you don't conrtol get -1/-1 for each slime counter on them.

Whenever a creature you don't control with a slime counter on it dies, create a 1/1 black Slug creature token.

{u}{b}, Sacrifice a Slug: Draw a card.