I have a necromancer in a cage, I want to do some fun stuff with him. But I'm not ready yet. I want to keep him safely locked up for now and then make use of him later for training purposes.
What are the conditions in which he can and cannot raise the dead?
Can he raise the dead whilst in a cage? If so will building a wall around him stop him?
Can he raise the dead whilst chained up?
What is the safest way to store him in such a way that I can make use of him later?