The rarity of Epoch of the Abysm is Rare, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
Epoch of the Abysm is a skin for Broodmother. The skin was added to the game on November 29, 2017, it was created by ChiZ.
Epoch of the Abysm is currently one of the most popular skins, but it is rarely seen in the game due to its high price.