A Stone of power is obtained by playing the Fist of Guthixminigame in "The Hunted" role (note that this item will disappear once you leave the minigame). As the person being hunted, your statistics will be drained, the closer you are to the centre, the weaker you will be. You obtain the stone from a stone dispenser located near your spawn location. You must hold the stone to obtain charges. The stone holds a maximum 5000 charges. You get a certain number of charges depending on where you are in the arena: outer edge 3 charges, in between the outer edge and where the ground turns green on your mini-map 6, edge of where the ground gets green on your mini-map 10, about where the four houses are 15, near the centre is 21, and at the centre is 28. You get charges about every three seconds. Every 6 charges (18 seconds), you will take 10 damage if you gather no more than 15 charge in last charge, and 20 damage for more than 15 charges. The stone is two handed, and you can not attack your opponent while wielding it.