The rarity of Defender of Matriarch is Rare, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
Defender of Matriarch is a skin for Magnus. The skin was added to the game on May 6, 2014, it was created by Robo.
Defender of Matriarch has been recently added to the game, which makes it rather popular with the game community.