Shimmering Wings is a common Enchantment — Aura card from Tempest (TMP), collector number 87. Current market price: $0.25, TCGplayer market prices via Scryfall.
Enchant creature (Target a creature as you cast this. This card enters attached to that creature.) Enchanted creature has flying. (It can't be blocked except by creatures with flying or reach.) {U}: Return this Aura to its owner's hand.