One of the cooler forms of magic in The Letter Mage is one we haven't gotten to yet (and won't for a little while--it's still about four installments away). The psychologists of the College of the Human Experience practice runecasting: a form of fortune-telling that focuses the subconscious and predicts likely behavior. 

The Adlerian Oracles use a form of runecasting that's slightly altered from the real thing: I incorporated elements of Tarot, and of course they use Foundation letters, not No...