Cruel Witness is a common Creature — Bird Horror card from Innistrad: Crimson Vow (VOW), collector number 55. Current market price: $0.20 (foil $0.22), TCGplayer market prices via Scryfall.
Flying Whenever you cast a noncreature spell, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)