Learning Spells
Characters learn spells through training, recovered texts, teachers, scrolls, inscriptions, artifacts, religious offices, pact terms, or inherited practice. The same spell may look different depending on where it was learned. A healing spell taught by a village midwife, a sun-priest, and a battlefield surgeon may share rules while carrying very different language and moral expectations.
The Game Master should treat spell sources as worldbuilding opportunities. A scroll found in a ruin may reveal who built the ruin. A forbidden spell may expose which institution tried to bury it. A spell taught by a demon may work perfectly and still leave the caster responsible for the agreement that made the lesson possible.