Arcanum Wings is a uncommon Enchantment — Aura card from Future Sight (FUT), collector number 48. Current market price: $0.67 (foil $19.86), TCGplayer market prices via Scryfall.
Enchant creature Enchanted creature has flying. Aura swap {2}{U} ({2}{U}: Exchange this Aura with an Aura card in your hand.)