The rarity of Darkclaw Emissary is Mythical, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
Darkclaw Emissary is a skin for Dazzle. The skin was added to the game on January 18, 2016, it was created by motenai.
Darkclaw Emissary has been recently added to the game, which makes it rather popular with the game community.