Helm of the Fiery Conqueror

Helm of the Fiery Conqueror is a tier 12 armor token. It can be exchanged at in Stormwind City or  in Orgrimmar for the following items:
 * Balespider's Hood
 * Cowl of the Cleansing Flame
 * Hood of the Cleansing Flame
 * Immolation Faceguard
 * Immolation Headguard
 * Immolation Helmet

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