Axel versus Laslo.

Fanatics of faith under vampirism is a classic. But you can fight it. For example, by using a sharp mind and casting antimagic on the fanatics before the opponent's turn (if possible, I don't remember). + if you're lucky, find Sandro's artifact. Or, as I said, take wizardry with distraction, empathy, and - morale against the enemy. This way, you can basically have your hero move twice per turn. The first time, remove the enchantments from his fanatics or massively slow down his troops; the second time, buff your troops, either with mass acceleration or something else.