Head back into the aviansie in the Eagle's Peak Mountain. They'll tell you your own soul is at risk after helping Azzanadra. Explain to OSRS gold them the positioning of Jaldroacht Pyramid, and they will issue orders to the Desert Eagle below them. Next, you will be advised that Azzanadra has to be planning to utilize the Vault of Souls to ressurect Zaros. Its place is unknown, but it will be at a cursed place. You're told the place is also underwater. Head to the Ancient Cavern, and try to start the Mithril Doors. You are thrown backward, and several spirits seem. At this point, you should run. Go to the Oracle, and she will shriek if she discovers you went there. She will inform you that only a legend who wielded an elemental power, and was the master of his own mind and body, ever escaped from the vault of spirits. Return to the Ancient Cave and kill a Mithril Dragon. He'll automatically discard some chewed bones. Burn them outside on a pyre ship. When nothing happens, talk to Otto Godblessed relating to it. He will indicate a potion to help. Create a break potion from soul weed and snape bud. Use it on your pyre boat, light it, and also a spirit will appear and give you a secret. He'll state that you must also wield elemental ability and buy RS gold control both mind and body. Proceed to the elemental workshop into the room that has the zapper seat and across from it is a locked door with the body rune symbol on it* Open it with your own key and hunt some shelves for the book of the elemental spear.