JoelF
First Post
I've toyed with the idea of having a campaign where the core spellcasting classes (wizard, sorceror, cleric and druid) were only available up to level 6, and after that, you MUST take a prestige class to advance in spellcasting ability. The theory was that only low powered magic was able to be mastered by mere mortals without outside assistance, and the prestige classes offered would tie a character to some outside source of magic. Obviously not all prestige classes would be available, and the only ones available that granted spellcasting abilities would grant them from a specific god, demon, devil, extra planar creature or force, etc. I have yet to develop the specifics, but it could suit your needs.
JoelF
JoelF