Lapistia

Does Prismilia's ability only allow learning basic spells, or can she also learn spells like Ishanad?

I have mixed feelings about this. Lichia Strain's magic - definitely not, Ishanad - initially I thought it shouldn't be allowed, but on the other hand, it doesn't really create any imbalance, and there was also an Ishanad teacher at the Illian Academy (who was later killed, but that's not the point), so there could be one in Prismilia as well.