I’ve got a Mage who suggested a clever idea.
What about a move where a non-Vancian wizard (like the Mage, but others too) could write spells into a spellbook, then incant those spells to repeat the magic?
As in, they have their “do magic” move, but if they take time (maybe via ritual, or in a place of power) to reflect on some magic they’ve performed, or witnessed, they can write the spell into a book — a literal book, such that the player would keep their own unique log.
Then, instead of doing the magic move, which can often have terrible effects, they could recite an incantation to achieve more reliable effects?
The real question, I suppose, is what incentive there would be to doing magic once you’d built up enough good spells — or what downsides there would be to the spellbook.