The rarity of Ravening Wings is Rare, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
Ravening Wings is a skin for Phantom Assassin. The skin was added to the game on April 1, 2015, it was created by NME.
Ravening Wings is currently one of the most popular skins, but it is rarely seen in the game due to its high price.