The law talisman is used to gain access to the law altar. At the altar, players can craft runes out of rune or pure essence by using the runecrafting skill. It requires level 54 runecrafting to make law runes at the altar. A law talisman can be turned into a law tiara by using the talisman on the altar while also having a tiara in your inventory.
Note: While crafting using the law talisman, players must abide by the rules of Entrana - No combat related items may be worn.