Played this with a few friends and had a blast. It's very evocative! Left you a review.
One minor rules point: it's possible for *both* your stats to reach 6. One way is if you have 6 in Wizard and 5 in Wild, then fail a Wild casting roll, which happened to us. Another is if you have a 6 and 5, and then cover for another character's failure (for example, if they're already on a 6 in Wild).
We weren't quite sure what should happen here - one option is that character simply can't cast spells any more! Another is that there's some kind of dramatic magical event and then both stats drop to 2. I'm not sure it's something that needs specific rules, just thought I'd mention it.
(we wound up using the wizard's prop to bring them back down to 5 in Wild)