I play as a Sorceror with Grimgnaw for a henchman. When I get to the door before Morag, I save my character and go back to the prelude. I am at lvl 20 by the time I reach Morag. I let Grimgnaw, my familiar, and summoned greater elemental fight every one in the main part of the room. I cast Horrid Wilting, Wail of the Banshee, and Ice Storm on Morag's protectors untill enough of them dead for Morag to be hurt. Then I attack with spells, weapons, and any of my followers that are still alive.