anti-Necropolis faction

To make a hero move more often, I always level up the spellcasting skill for Necromancers and all other magic races. Against a Lion or Sympathy build, Spell Attack (SA) can be helpful in a long game against Necropolis. And to remove all effects from flags, idols, etc., on the main enemy, you can attack with a supporting hero and one unit.

At 2500 archers, you should have 10-15K archers, 4-5K vampires, and other units from three castles.