The rarity of Jolly Reaver is Mythical, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
Jolly Reaver is a skin for Pudge. The skin was added to the game on May 17, 2017, it was created by katzeimsack.
Jolly Reaver is currently one of the most popular skins, but it is rarely seen in the game due to its high price.