A Wizardry Talent (unpublished 1982 Interplay article)

[Tywyll]

Originally Posted by Chris Rice

I also did away with the artificial distinction between Heroes and Wizards by creating two new Talents. Apprentice was an IQ8 Talent that allowed a character to learn any spell from IQ8 up to IQ13. Wizard was an IQ14 Talent that allowed spells up to IQ20.

I use a variation on that from someone's house rules:
Apprentice 2-IQ 8-11
Mage 2-IQ 12-16
Mysteries 2-IQ 17+