Zamorak staff

The Zamorak staff is a type of God staff that is obtained after completing the Mage Arena minigame. It can only be used in combat, and is the only staff that will allow you to cast the Flames of Zamorak spell. To get it, you must defeat Kolodion the mage, in all of his different forms. Either speak to the merchant after worshipping the statue of Zamorak or buy one off the merchant for 80,000. The spell also has the effect of lowering the opponent's magic level.

Ironically, Zamorak staff has an weaker stats than normal elemental staves even though it is a god item.