Which faction is the most interesting to play as, and what strategy do you find most engaging?

Once upon a time, my favorite type of magic was chaos. What could be more convenient than roasting an enemy with a powerful fireball, occasionally adding spices like reducing defense and stunning them? That's why the Dungeon faction was my favorite (and still is)... Until I had to complete one mission (I don't remember which one, I think it was for the demons) and fight an enemy with twice the army size. That's when I took a look at the purple tab in the spellbook. And there...:smile11:
There were blindness, suggestion, and confusion (my favorite:o), and a bunch of other spells. Later, I also appreciated dark magic in the fight with Duncan (Hammers of Fate, 1st campaign, 3rd mission). And in the first campaign of the orcish expansion. It's really a cool thing...
Orcs don't have magic, and I don't like that very much. Perhaps this is compensated by their rage, but I haven't fully figured it out yet. Just like with the dwarven runes.