The rarity of Form of the Abyssal Kin is Mythical. At this moment the item is available for trade.
Form of the Abyssal Kin is a skin for Queen of Pain. The skin was added to the game on May 15, 2018, it was created by LaughingSkyPig.
Form of the Abyssal Kin is currently one of the most popular skins, but it is rarely seen in the game due to its high price.