Darkstar Augur is a rare Creature — Bat Warlock card from Bloomburrow (BLB), collector number 90. Current market price: $0.97 (foil $1.32), TCGplayer market prices via Scryfall.
Offspring {B} (You may pay an additional {B} as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.) 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.