Head back to the aviansie, and OSRS gold report what happened. They will have nothing fresh to say, and they suggest you hunt some sage advice to calm yourself within the affair. Head to the oracle on Ice Mountain.
A cutscene ensues where Hazeel looks and is contending with the Oracle, ordering her to tell him how to ressurect Zamorak. You look, and hazeel grows angry. You need to fight him.
Throughout the conflict, he'll use a special dragon weapon, as well as its own special. He summons several Nightmare Blades like from earlier from the tower. He will use a magic attack if you when his health is reduced and if you utilize prayer. After he is dead, you can take his weapon if you like, but you have to pay Oziach a LOT of buy RS gold money to fix it. The Oracle will tell you Hazeel is not dead, he teleported at the last moment.