Originally Posted by Drolyt
It's odd that the class progresses normally like a Sorcerer until 11th level then gets cut off. In fact before then they progress faster than a Sorcerer.
Even more so than a traditional Sorcerer, these guys operate on instinct. They don't think "Everything I know about magic says that I shouldn't have enough power to do this." They think "All I know about magic is that I have it in me, I'm gonna try and do this." It works out fairly well for them, until they start reaching the points where they have to actually keep control of powerful spells. Plus, they're generally more physically and mentally mature than a sorcerer (not necessarily), giving their magic time to develop passively as well, just without them ever using or realizing it.