AEG's Magic. I bought it mainly too read. I'm an aspiring freelancer, and I love read imaginative game books anyway. But the Chronomancer turned out to be perfect for a seeress I wanted to use, and the fighter-mage types filled a niche long before we had Eldritch Knights and Hexblades (and at which they still excel even in the presence of flashier new core and PrCs). The Totemist is the way, I think, to handle so many savage spellcasters, much more interesting than the Adept. Some of it's just weird, like Forge magic, but you don't have to use anything you don't want to.