Location Function Creator The war amulet, also known as a battle amulet, is a device in Jak 3 used by Spargus citizens as a safety beacon and proof of citizenship. The amulet is made of Precursor metal and consists of three parts; a circle-shaped center and two half moon-shaped parts that fit around the center. Jak receives a new part each time he proves himself worthy to Damas after fighting in arena battles.