Leering Onlooker is a uncommon Creature — Vampire card from Murders at Karlov Manor (MKM), collector number 91. Current market price: $0.16 (foil $0.24), TCGplayer market prices via Scryfall.
Flying {2}{B}{B}, Exile this card from your graveyard: Create two tapped 1/1 black Bat creature tokens with flying.