Master Class: Runecaster (PF1)

From the introduction: The runecaster is a manipulator of powerful magic that take the form of runes—written sigils which serve as containers for magic energies—rather than spells. Runes existed before the first languages were created, and are a form of writing reality-changing energy. Each rune describes a single concept so powerfully that the mere presence of the rune brings some element of that concept into existence.