Call a Surprise Witness is a uncommon Sorcery card from Murders at Karlov Manor (MKM), collector number 289. Current market price: $0.20 (foil $0.24), TCGplayer market prices via Scryfall.
Return target creature card with mana value 3 or less from your graveyard to the battlefield. Put a flying counter on it. It's a Spirit in addition to its other types.