Inner Demon is a uncommon Enchantment — Aura card from Jumpstart 2022 (J22), collector number 428. Current market price: $0.32, TCGplayer market prices via Scryfall.
Enchant creature Enchanted creature gets +2/+2, has flying, and is a Demon in addition to its other types. When this Aura enters, all non-Demon creatures get -2/-2 until end of turn.