[quote=@Light]
Is there any capacity for people to learn magic beyond the kinds they are naturally attuned to? I'd assume it's possible, else how would the black mana arts have been discovered to begin with? Unless I'm mistaken and that an individual can be born with attunement to a kind of black mana.
[/quote]

Yeah, people can learn more than their naturally attuned Auras, it's just that those are the focus when they're first starting out at the Academy.

Hmmm... Now I'm wondering if maybe I should switch up the magic system to instead give every character ten experience points to place in the different Arcane Arts. Like, they could have a Primary Arcane Art that automatically starts out with five XP, and then they have ten additional XP to use for various Secondary Arts or further amplify their Primary. Then they can train to earn more points over the school year, signifying their magical progress. If we do that, it would give everyone a lot more freedom and I can make a list of various spells and magical effects and the points required to use them. 

What does everyone think?