Here's a question regarding the efficiency of hero development.
If I'm playing as the Academy, I take the Oracle. I've tried two development paths:
1) Sorcery - Education - Light - Darkness - Summoning
2) Sorcery - Education - Light - Summoning - Defense
The hero is maxed out at level 24. Based on your experience, what's better for the Academy hero – three magic skills or two magic skills and defense?

P.S. The opponent isn't a Necromancer, so the question of Darkness is resolved when it arises.