The rarity of Flowersong Tempest is Mythical, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
Flowersong Tempest is a skin for Windranger. The skin was added to the game on June 2, 2015, it was created by SeeingTriangles.
Flowersong Tempest is currently one of the most popular skins, but it is rarely seen in the game due to its high price.