Nantuko Vigilante is a common Creature — Insect Druid Mutant card from Murders at Karlov Manor Commander (MKC), collector number 177. Current market price: $0.34, TCGplayer market prices via Scryfall.
Morph {1}{G} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When this creature is turned face up, destroy target artifact or enchantment.