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.
NM-Mint Foil - $27.10
Lightly Played Foil - $25.70
Moderately Played Foil - $24.40
Heavily Played Foil - $21.70
Damaged Foil - $17.60
NM-Mint Foil Non English - $27.10
Lightly Played Foil Non English - $25.70
Moderately Played Foil Non English - $24.40
Heavily Played Foil Non English - $21.70
Damaged Foil Non English - $17.60