Helm of the Fiery Vanquisher

Helm of the Fiery Vanquisher 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 Helmet
 * Elementium Deathplate Faceguard
 * Elementium Deathplate Helmet
 * Firehawk Hood
 * Obsidian Arborweave Cover
 * Obsidian Arborweave Headpiece
 * Obsidian Arborweave Helm

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