Oni Possession is a uncommon Enchantment — Aura card from Duel Decks: Divine vs. Demonic (DDC), collector number 51. Current market price: $0.19, TCGplayer market prices via Scryfall.
Enchant creature At the beginning of your upkeep, sacrifice a creature. Enchanted creature gets +3/+3 and has trample. Enchanted creature is a Demon Spirit.