Ephara's Enlightenment is a uncommon Enchantment — Aura card from Born of the Gods (BNG), collector number 146. Current market price: $0.09 (foil $0.29), TCGplayer market prices via Scryfall.
Enchant creature When this Aura enters, put a +1/+1 counter on enchanted creature. Enchanted creature has flying. Whenever a creature you control enters, you may return this Aura to its owner's hand.