Windreaver is a rare Creature — Elemental card from RNA Guild Kit (GK2), collector number 22. Current market price: $0.10, TCGplayer market prices via Scryfall.
Flying {W}: This creature gains vigilance until end of turn. {W}: This creature gets +0/+1 until end of turn. {U}: Switch this creature's power and toughness until end of turn. {U}: Return this creature to its owner's hand.