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 Necropolis, because once my opponent in HotA had very bad luck with the initiative order, and I was able to use the "Subjugate" skill with Temptresses to resurrect my Imps with Archangels. These Imps, in turn, summoned reinforcements and stole all of Dugald's mana, which ensured my unconditional victory in the battle.