[Meglobob]

It is WAD and is a needed mechanic in Dom3. Otherwise, Dom3 would be spoiled by everyone going for returning mages that were effectively unkillable and could slaughter entire armies without chance of dieing.

If you think about it, what you are argueing for is immortality in enemy dominion. Not good, not good at all. It would be a worse exploit than the air mage/air queen casting Mists of Deception then retreating, which so, so many people complained about.