The rarity of Mantle of Winter's Warden is Rare. At this moment the item is available for trade.
Mantle of Winter's Warden is a skin for Crystal Maiden. The skin was added to the game on November 30, 2017, it was created by Chameleon.
Mantle of Winter's Warden is currently one of the most popular skins, but it is rarely seen in the game due to its high price.