Taborax, Hope's Demise is a rare Legendary Creature — Demon Cleric card from Zendikar Rising Promos (PZNR), collector number 129p. Current market price: $0.32 (foil $0.78), TCGplayer market prices via Scryfall.
Flying Taborax has lifelink as long as it has five or more +1/+1 counters on it. Whenever another nontoken creature you control dies, put a +1/+1 counter on Taborax. If that creature was a Cleric, you may draw a card. If you do, you lose 1 life.