"A few hours."

"Oh okay. So I guess I could do that and then see if that gives me any insights on how to do things to the harmonics of my world."

"Go for it."

"Can you do it a couple more times, though? So I can pay attention to the magic part?"

Light light light.

"Okay, I got it. Lemme see what I can do—"

And now she will do her favourite activity: staring at nothing!

...Promise busies herself elsewhere.

Stare stare stare light? No. How about now? No.

...hmmm. Does it helps if she uses arcanism to make a short-lived light and then look at what fairylights would actually look like there?

That does help, if she's paying attention to the right things and arcanizes the right sort of light.

Oooh cool so by the time Promise comes back she'll probably have managed it.

Yup. "Congratulations."

"Thanks! Do these things compensate each other? Like, if the harmonics are flatter does that allow me to know less about the environment, if I know more about lighting can I worry less about dust...?"

"Yes. Although it's not 'if they're flatter', it's 'if you know them'."

"Oh well then I guess I have an automatic advantage over any hostile sorcerer if I just mess it up a lot."

"Yes. Especially if you confuse them on their home turf."

"Good to know. I'm going to my world to see if I can do anything to harmonics there—I don't expect you to hang around this gate, so, how do I get in contact when I've figured it out?"

"...there isn't really a good way."

"...a paired stone. I can link two stones so that one gets warm or something if the other one's rubbed a certain way, that way you'll know I'm on this side and done? And you could open a gate to my world every, I don't know, two weeks or so if it takes that long to see if nothing's come up that's stranded me?"

"You think the stones will work across the worlds?"

"Probably not, which is why I suggested the two weeks thing, I'm expecting I'll use them if slash when I manage to gate here on my own."

"Anyway, I can reuse this gate as much as I want, opening and closing it's instant." She demonstrates.

"Oh, okay, that works, then."

She looks around for small rocks.

There are rocks of various sizes and shapes.

She picks a couple and frowns at them for a couple of minutes, then offers one to Promise.

Promise holds her hand for the rock to be dropped.