The Fabled Dain Frostreaver IV  

thats why you fight him in the pit, saves you from needing mages to coh

he banishes tanks to the pit, you need 3-4 coa geared tanks, with 4-5 healers capable of changing targets fast, u need 2 magis cothing tanks asap, he banishes to the pit the mt every 30 sec or less, ton of hp, with def and 35shielding takes me to 0 hp in about 5 sec 17k, hits fast 1480 max with def