Fallen Ideal is a uncommon Enchantment — Aura card from Secrets of Strixhaven Commander (SOC), collector number 117. Current market price: $0.24, TCGplayer market prices via Scryfall.
Enchant creature Enchanted creature has flying and "Sacrifice a creature: This creature gets +2/+1 until end of turn." When this Aura is put into a graveyard from the battlefield, return it to its owner's hand.