Rune Magic (PF2)

From the introduction: Before spells existed, there was a powerful magic that take the form of runes—written sigils which serve as containers for magic energies. Runes existed before the first languages were created, and are a form of writing reality-changing energy. Also known as “true runes,” each of these ancient symbols describes a single concept so powerfully that the mere presence of the rune brings some element of that concept into existence.