Mantle of the Forlorn Protector

Mantle of the Forlorn Protector is a tier 11 armor token. It can be exchanged at in Stormwind City or  in Orgrimmar for the following items:
 * Earthen Pauldrons
 * Earthen Shoulderguards
 * Lightning-Charged Spaulders
 * Mantle of the Raging Elements
 * Shoulderwraps of the Raging Elements
 * Spaulders of the Raging Elements

Source
This item drops from Cho'gall in the Bastion of Twilight on Normal mode.