Can nobles be casters?

If so, perhaps Banhammer was a Predictamancer himself and the events that occured during the fall of his kingdom as well as the results of that collapse have all been part of some Xanatosian Gambit to end all Xanatosian Gambits.

Perhaps there was one ultiimate outcome to everything; the destruction of FAQ, whether it be by Saline IV, Transylvito, or by Jetstone, but one of them would have more drastic consequences than the other. Some survivors versus none perhaps. Therefore, taking the least of three evils as your destroyer would be best, especially if it eventually resulted in the humbling of everybody involved. Sure, FAQ would be gone, but part of it would live on and eventually avenge it.