Angels and paladins – how to use them? There are also discussions about them here.

I'm leaning towards not using Archangels against factions with the "Subjugate" skill, except against the Undead, because once my opponent in HotA had very bad luck with the initiative order, and I was able to use the "Subjugate" skill with Succubi to resurrect my Imps, who in turn summoned reinforcements and stole all the mana from Dugald, which ensured me an unconditional victory in the battle.