[Gandalf Parker]

Ive used some of the "cant leave home" units (there are others) to step out and handle something close such as province lost to a random event or distance attack spell. But I always try to remember to move them back.

Its kindof the same awareness you need to develop for your pretender and prophet. Keep an eye on their hit points and try not to move them too far. When the hit points start dropping then move them back until they recover.