Mystic earth staff

A mystic earth staff is the most powerful earth elemental staff. It requires 40 Attack and Magic to wield. It has the autocast option, which can be used for all of the elemental combat spells, and provides an unlimited amount of earth runes. To create one, take an earth battlestaff to Thormac after completing the Scorpion Catcher quest, along with 40,000 coins.