The rarity of Wrath of Ka is Mythical, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
Wrath of Ka is a skin for Necrophos. The skin was added to the game on November 10, 2014, it was created by J-fsh.
Wrath of Ka is currently one of the most popular skins, but it is rarely seen in the game due to its high price.