[CogDissident]

Ashen eremor is easy, you just need to produce priests everywhere. If your fighting them, then every temple you have should be spitting out a priest every turn, because 1 priest can kill about 10 undead per round, even an 800 unit horde falls to 20 generic priests (which cost equal to a castle, 1000gp total) in 4 combat turns (well, maybe more like 6-8 because you'll start to miss after you kill the first 400). But you just put some units on hold+attack in front to keep the undead off your priests, and theres no way that they'll do anything. Killing 800 undead without losing anything significant is certainly a way to annihilate eremor easilly.