Spells
Each level of a magic skill (Elemental, Entropic or Spiritual Magic) teaches one spell from that class's list.
None of your classes cast spells. Elementalists, Entropists and Spiritists learn spells through their Magic skill.
Heroic Skills
Each class you master (level 10) grants one Heroic Skill.
Locked: none of your classes is at level 10 yet. Starting heroes don't have Heroic Skills.