Vulturous Aven is a common Creature — Bird Shaman card from Dragons of Tarkir (DTK), collector number 126. Current market price: $0.11 (foil $0.49), TCGplayer market prices via Scryfall.
Flying Exploit (When this creature enters, you may sacrifice a creature.) When this creature exploits a creature, you draw two cards and you lose 2 life.