The Thinking Thinker

Concept: “Through many alchemical experiments you have mastered not only your wit and intellect but also, well, actually that’s it. But still you’re smart!”
Content: A brainiac character class
Writing: Standard class profile with origins and special features
Art/design: Borgy but readable graphic design with an appropriately bizarre illustration
Usability: You don’t have to be a big thinker to play one