The rarity of The Fiend Cleaver is Rare, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
The Fiend Cleaver is a skin for Sven. The skin was added to the game on October 17, 2014.
The Fiend Cleaver is currently one of the most popular skins, but it is rarely seen in the game due to its high price.