Artholath was secretly excited. This was the opportunity of ten human lifetimes;  the reason for his existence. He heard the crashing of battle below.

"The simplest means would be to release the demons of the nearby volcano, just a little ways from here. They will be more than happy to create the chaos you need to take what you wish from the remains..."

"I suggest moving quickly; to break that spell requires considerable concentration and no distractions. There is an exit on the side; if you wish, I can distract the enemy downstairs so that you may work on that goal."