Acidic Slime is a uncommon Creature — Ooze card from Magic 2011 (M11), collector number 161. Current market price: $0.19 (foil $0.55), TCGplayer market prices via Scryfall.
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.) When this creature enters, destroy target artifact, enchantment, or land.