Toxrill, the Corrosive

Mana Cost: {5}{B}{B}
Total Cost: 7
Type: Legendary Creature — Slug Horror
Description: At the beginning of each end step, put a slime counter on each creature you don’t control.
Creatures you don’t control 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.
Power: 7
Toughness: 7
Colors: B