The rarity of Off-Hand Baton of the Spiteful Eye is Mythical. At this moment the item is available for trade.
Off-Hand Baton of the Spiteful Eye is a skin for Shadow Shaman. The skin was added to the game on Invalid Date, it was created by sandviper.
Off-Hand Baton of the Spiteful Eye has been recently added to the game, which makes it rather popular with the game community.