Sulfuras, Hand of Ragnaros



Sulfuras, Hand of Ragnaros is the legendary hammer of the Fire Lord, Ragnaros. Until the release of Blackwing Lair in patch 1.6, it boasted the highest DPS of any melee weapon in the game. Also, until Might of Menethil was added to the game with patch 1.11, it still maintained the highest raw damage in the game. Though the weapon has lost its damage supremacy, it is still widely seen as a status symbol.

Equipping the mace awards the Feat of Strength, Sulfuras, Hand of Ragnaros (achievement). Therefore the achievement is only available for death knights, druids, paladins, shaman, and warriors.

Source
This weapon is not dropped, but rather may be forged by anyone who has obtained both the Sulfuron Hammer and Eye of Sulfuras. A skilled (300) blacksmith is required to make the hammer, and the Eye is only, and rarely (about a 3% rate), dropped by Ragnaros himself. The plans for the Sulfuron Hammer are obtained by turning in a Sulfuron Ingot to Lokhtos Darkbargainer in the Grim Guzzler in Blackrock Depths. There is no reputation requirement to receive the plans.