Tactics against Necromancers.

It's tough to fight against the Undead... But they also have weaknesses; almost half of the beneficial spells don't work on them... Plus, there's special magic against them, only one archer, and the Dragon is completely useless, so only Vampires and Liches save the Undead. But I fight them with Towers; there are many archers, and they are strong, and I send Golems into battle: 1-armor, 2-magic resistance, 3-vampires can't bite them, and of course, magic. Otherwise, they aren't that strong if you fight them intelligently and tactically...