The rarity of The Iron Claw is Mythical, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
The Iron Claw is a skin for Lone Druid. The skin was added to the game on May 16, 2014, it was created by Tidal Craftsman.
The Iron Claw has been recently added to the game, which makes it rather popular with the game community.