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

with this presence, initiative and 8 are not scary, but then the HP should be 150. DON'T FORGET about some kind of EARTH SHOCK, although I'm in favor of weakening offensive magic - just for example.

If you're afraid of offensive magic, then it would be more logical to reduce both HP and defense at the same time. For example, HP to 150, defense to 20. Such units will take a lot of damage when hit or retaliating, but otherwise, there's no other way, considering the rarity of hits and the fact that they can't be tanks with that much damage.