This tutorial really does need work. It shows practically no Magic through all 34 turns. I only saw one spell — some kind of summon bear. Although on the turn 30 skirmish the narrators mentioned that a fireball would have been useful. An odd omission for a game with the word "Magic" in its title.
I'm very interested in this game and really want to find out what the role of magic is in the gameplay. I'll keep looking for other videos.