The rarity of Featherswing is Mythical, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
Featherswing is a skin for Windranger. The skin was added to the game on October 9, 2015, it was created by blossomalex.
Featherswing is currently one of the most popular skins, but it is rarely seen in the game due to its high price.