The rarity of The Stormcrow's Spirit Set is Rare, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
The Stormcrow's Spirit Set is a skin for Witch Doctor. The skin was added to the game on Invalid Date, it was created by Farfarer.
The Stormcrow's Spirit Set is currently one of the most popular skins, but it is rarely seen in the game due to its high price.