Mirko, Obsessive Theorist is a mythic Legendary Creature — Vampire Detective card from Murders at Karlov Manor Commander (MKC), collector number 50.
Flying, vigilance Whenever you surveil, put a +1/+1 counter on Mirko. At the beginning of your end step, you may return target creature card with power less than Mirko's from your graveyard to the battlefield with a finality counter on it. (If it would die, exile it instead.)