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 melee weapon, it can be used to auto-cast the Claws of Guthix spell. Alongside croziers, it has the highest Prayer bonus of all one-handed weapons.
This weapon is slightly better than a Rune mace, with an additional +2 for Stab, Slash, and Crush Attack; +2 Stab, Slash, Crush, Magic and Ranged Defence; +2 Strength; +2 Prayer; and +8 Magic Attack. This makes it one of the only melee 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 Zamorakian 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. Note that the Void knight mace does not count towards the four pieces needed for the void set effect.