I had a lot of fun with this! The game is beautiful, and I love the mechanic of drawing the runes to send units. Kind of gives me vibes of Lost Magic on the DS.
I'm not sure if there was supposed to be a resource being used up when creating units. I just drew the spells as fast as I could. I did notice that the book also doesn't indicate which end of the stroke to start from, since they only seem to work in one direction.
Overall, I super dig this one. Great job!