The skin was added to the game on September 1, 2021. It was created by VALVE.
The rarity of Whitewind Battlemage Mantle is Mythical, and been equipped it takes a “shoulder” slot. The skin has 2 alternative styles. At this moment the item is not available for trade.
At the moment, Whitewind Battlemage Mantle is not on the list of popular skins and is rarely seen in the game.