Mantle of the Fiery Vanquisher

Mantle of the Fiery Protector was a tier 12 armor token. Prior to patch 6.0.2, it could be exchanged at in Stormwind City or  in Orgrimmar for the following items:
 * Dark Phoenix Spaulders
 * Elementium Deathplate Pauldrons
 * Elementium Deathplate Shoulderguards
 * Firehawk Mantle
 * Obsidian Arborweave Mantle
 * Obsidian Arborweave Shoulderwraps
 * Obsidian Arborweave Spaulders

Source
This item drops from Majordomo Staghelm in the Firelands on normal mode.