Bandosian warhammer

The Bandosian warhammer is a 2-handed warhammer that is part of the Bandosian armour set, and was released along with the God Wars Dungeon expansion update. It requires 70 Strength and 65 Attack to wear. It is a possible drop from General Graardor and his bodyguards in the God Wars Dungeon.

Its special attack, Bonebreaker, takes 5 seconds to perform, then hits 5x the damage of a regular attack. This uses 100% of the special attack bar.

When you wear the full set, (The helmet, the chestplate, the tassets, the boots, the gauntlets and the warhammer); you achieve a special set effect which slightly boosts your damage and accuracy when using the "Crush" attack style, depending on how close you are to death; the lower your LP, the bigger the boost is. This set effect, along with the special attack and the weapon's large Strength bonus, makes the Bandosian warhammer one of the most sought-after weapons in the game.

Trivia

 * The Bandosian warhammer was once called the "Bandos warhammer", but was re-named to avoid confusion with the bandos rune armour from Treasure Trails.
 * Although the item is called the "Bandosian warhammer", its status as a 2-handed weapon and it's high Strength bonus make it more similar to a maul.