And who do you choose in Haven, Archangels or Seraphs? I haven't been able to decide for sure yet. I haven't figured out what spells the Seraph casts. (Maybe someone can tell me?) I can say for sure that the Archangels are somehow more reliable; they won't deal ridiculously low damage, and debuffs don't affect them. But Seraphs are a debatable choice. If there is a light magic spell like "divine power," and the enemy hero doesn't specialize in Dark magic, then there's no need to think about it. Definitely choose Seraphs.

Of course, this is just my opinion.