It is important to note that the player cannot be resurrected
He or she should have at least 250 fire resistance unbuffed as well stamina gear. To assist with this, a shaman with a Fire Resistance Totem or a paladin to keep a Fire Resistance Aura should be placed in his or her group.
Healers assigned to the warlock tank, usually two are enough to keep a warlock tank alive, need sro gold to also remember to heal the warlocks pet. The pet should be off to the side, where it will not get it by Whirlwinds during the humanoid phase or the Chaos Blast during the demon phase. Healers can set the warlock pet as their focus target to be able to quickly target the pet for heals.
After 15 seconds into the fight, he summons the bane of all healers until recently: Inner Demons. Since Blizzard recently added damage bonuses to healing gear, healing classes should not have a problem killing their demons. Each demon must be killed within 30 seconds.
If a demon does not die, it minds controls the player it was assigned to for at least 10 minutes, taking the person out of the fight. It is important to note that the player cannot be resurrected during the fight either if the death was Inner Demon related. Anyone besides the current aggro target can get an Inner Demon.