The Draconic staff requires 95 Magic and 95 Attack to wield and it's one of the three powerful draconic weapons. it can be claimed by defeating the Bo-rak (level 870) in the Tundra Caves minigame. It has 50,000 casts of it's own spell before turning into dust, normal spells will not degrade the staff. They say the ancient's made it by using a chaotic staff and adding dragon essence from the Dragonkin. If you show it to Thok, he will give you 120,000 Dungeoneering experience and 12,000 Dungeoneering tokens.