Void knight mace

The Void Knight mace can be bought from a Void Knight for 250 commendation points, although a player must have 42 Attack, Strength, Defence, Hitpoints, Ranged, and Magic, along with 22 Prayer. This mace is unique because, even though it is a fairly strong melee weapon, it can be used to autocast spells. The spells it may autocast include Crumble Undead, Claws of Guthix, and Wind, Water, Earth, and Fire Wave. This weapon is slightly better than a Rune mace; it has an additional +2 for Stab, Slash, and Crush Attack; +2 Stab, Slash, Crush, Magic and Ranged Defense; +2 Strength and Prayer; and +8 Magic Attack. This makes it one of the only weapons in game to have a positive ranged defence bonus, other than the Red topaz machete and Lunar staff, with +1, and the Dragon spear and Zamorak Spear, with +5 and +13, respectively. To cast Claws of Guthix, the player still must have cast the spell 100 times in the Wilderness Mage Arena.

Since it can auto-cast Claws of Guthix, it may be used on Dagannoth Rex by mages.