The rarity of Opus of the Vizier Exile is Mythical, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
Opus of the Vizier Exile is a skin for Dark Seer. The skin was added to the game on September 14, 2016, it was created by Zaphk.
Opus of the Vizier Exile has been recently added to the game, which makes it rather popular with the game community.