The rarity of Vigil of the Penitent Scholar is Rare, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
Vigil of the Penitent Scholar is a skin for Skywrath Mage. The skin was added to the game on April 26, 2018.
Vigil of the Penitent Scholar is currently a rather popular skin, which is often seen in the game.