Darkstar Augur is a common Token Creature — Bat Warlock card from Bloomburrow Tokens (TBLB), collector number 11. Current market price: $0.35, TCGplayer market prices via Scryfall.
Flying At the beginning of your upkeep, reveal the top card of your library and put that card into your hand. You lose life equal to its mana value. (This token's mana cost is {2}{B}.)