Some ideas: raiding, seiging, spell AI and more..

[Graeme Dice]

Soapyfrog said:
And on the subject of undead, I cast 4 undead hordes and a bunch of raise dead at the start of the battle and the doom horrors ignored them and went right after my casters.

Look at the numbers on undead horde, and compare it to raise skeletons and animate dead. The only reason to cast undead horde is if you have a pretender with very high level death magic. Three castings of raise skeletons gives more troops than a single casting of undead horde. Two castings of animate dead gives more troops than a single casting of undead horde.

Not that skeletons would be able to HIT the doom horror, and even if they did they would probably just die from the blood vengeance.

Sure, but you have an infinite supply of them from the combination of drain life and raise skeletons. After all, the AI casts drain life as soon as its fatigue nears 100.