Desecration Demon is a rare Creature — Demon card from Duel Decks: Nissa vs. Ob Nixilis (DDR), collector number 44. Current market price: $0.39, TCGplayer market prices via Scryfall.
Flying At the beginning of each combat, any opponent may sacrifice a creature of their choice. If a player does, tap this creature and put a +1/+1 counter on it.