The rarity of Rekindled Ashes is Mythical, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
Rekindled Ashes is a skin for Ember Spirit. The skin was added to the game on February 2, 2016, it was created by Sylei.
Rekindled Ashes has been recently added to the game, which makes it rather popular with the game community.