Callous Bloodmage is a rare Creature — Vampire Warlock card from Strixhaven: School of Mages Promos (PSTX), collector number 66p. Current market price: $0.31 (foil $0.56), TCGplayer market prices via Scryfall.
When this creature enters, choose one — • Create a 1/1 black and green Pest creature token with "When this token dies, you gain 1 life." • You draw a card and you lose 1 life. • Exile target player's graveyard.