Tactics against Necromancers.

...So, against Necropolis, we take Tower – and we definitely won't go wrong!

Against Necropolis, we take another Necropolis – and we definitely won't go wrong! :)

And there is also a universal tool (of course, this is all conditional, but...) - these are my favorite ancient behemoths. :) - 80% defense is nothing to sneeze at. :)