The rarity of Battleseeker Set is Rare, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
Battleseeker Set is a skin for Spirit Breaker. The skin was added to the game on July 10, 2013, it was created by Cersei Lannister.
Battleseeker Set has been recently added to the game, which makes it rather popular with the game community.