Dragon warhammer (Hyper86)

The dragon warhammer is a powerful one-handed weapon. It requires Attack level 60 to wield. As with all dragon equipment (Except the sq shield and platebody), this item CANNOT be made using the Smithing skill. This weapon can only be achieved as a drop from Dragonite dragons, the Barrows dragon or the Crystal dragon.

Its special attack involves the player jumping up and swinging the hammer down on their foe, causing 2.5x damage more than a normal attack, using up 75% of the special attack bar.