Bloodwater Entity is a uncommon Creature — Elemental card from Hour of Devastation (HOU), collector number 138. Current market price: $0.19 (foil $0.54), TCGplayer market prices via Scryfall.
Flying Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) When this creature enters, you may put target instant or sorcery card from your graveyard on top of your library.