Mystic fire staff

A mystic fire staff is the most powerful fire elemental staff. It requires level 40 Attack and level 40 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 fire runes. To create one, take a fire battlestaff to Thormac after completing the Scorpion Catcher quest, along with 40 000 coins.

This staff is also being dropped by Killerwatts.