"Oh, if I don't have to worry about vices, I can learn tons of things. Oneiromancy in particular might have amazing untapped vistas, because oneiromancers lose receptive language so after a while they can't receive suggestions anymore, not in the way people usually phrase suggestions anyway - there's probably less of it to learn than anything else because it's almost solo research beyond that point. But there's only as much as has made it into the knowflowers; I'll have to combine 'mancies in substantial quantities or do independent research to accomplish anything truly unprecedented. Will the wall last? Because if I learn a dozen 'mancies all the way and then it collapses I'll be a disaster."