It seems we haven’t had the question come up of whether Necromancer triggers a skeleton to be made upon it’s own death: Any official ruling here?
Perhaps more interestingly, what if two Necromancers are in play, and something kills both simultaneously (e.g. Tyrannosaurus Rex, Judgment Day)? Would 2, 3 or 4 skeletons be made (I could see an argument for any of those, based strictly on the rules text)