Technical machines. And Technical records. Basically instructions on how to do various moves stored on whatever current technology is portable and convenient enough for it. Like a move tutor except it's just a book and not a person.

[ or to be more precise, a floppy disk, or a compact disc, or a roll of holo paper in Go, ]

... Hmm. If there's something I'm lucky in. It's that the moves I've been trying are all very different from each other. Harder to accidentally do one thing when aiming for another like that. But fire ...

[ a lot of it really does just boil down to ... more or less or bigger or hotter of it, doesn't it? ]

How big or small can you make Ember?