"Necropolis" - changes to creatures of levels 6-7.

I apologize – I messed up with the terminology. As for the deaths, you mentioned that Necropolis units are constantly being killed but still remain strong, which seems a bit excessive in this mod, although it's still tolerable (I don't see any major cheating). However, the increase in their numbers is definitely noticeable, while the players expected some kind of balance.