[As soon as he starts drawing the circle, Eliza lights up with excitement, and as soon as the transmutation is finished she's diving for her purse and digging out a small pile of things: a case of chalk, a Tupperware with a small spiky skeleton inside, and a notebook stuffed with post-it tabs]

Magic, that's magic! Obivously your world's system, your world's terminology, so it's a science, and I didn't know using tectonic power was even an option, we use our internal power so that's where ours is magic, but like—

[She flips open the notebook, skimming to an elaborate circle array sketched out in different colors and marked up with notes— a rough draft in-progress]

It looks like my magic system! Circles for containment and then runes for the programming!