The rarity of Form of the Great Grey Set is Mythical, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
Form of the Great Grey Set is a skin for Lycan. The skin was added to the game on May 22, 2013, it was created by Vladimir >the implyer.
Form of the Great Grey Set has been recently added to the game, which makes it rather popular with the game community.