Vilis, Broker of Blood is a rare Legendary Creature — Demon card from Game Night: Free-for-All (GN3), collector number 63. Current market price: $9.89, TCGplayer market prices via Scryfall.
Flying {B}, Pay 2 life: Target creature gets -1/-1 until end of turn. Whenever you lose life, draw that many cards. (Damage causes loss of life.)