Undercover Crocodelf (MKM-239) - Murders at Karlov Manor

Whenever this creature deals combat damage to a player, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this token: Draw a card.")
Disguise {G/U}{G/U} (You may cast this card face down for as a 2/2 creature with ward . Turn it face up any time for its disguise cost.)