Vengeful Creeper is a common Creature — Plant Elemental card from Murders at Karlov Manor (MKM), collector number 182. Current market price: $0.14 (foil $0.17), TCGplayer market prices via Scryfall.
Disguise {5}{G} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.) When this creature is turned face up, destroy target artifact or enchantment an opponent controls.