In a world of chalk and slate, we basically creates 3d presentation, design aid, mapping and teaching aid.Hmm.
As hilarious as the Suddenly Cats bits was, I'm looking in there and going.
"Holy shit, Mathilde invented a spell that could be relatively easily simplified into Lesser Magic, only functionally needing one editing pass to reach that point"
People invent new bits of Color Magic all the time, Lesser Magic tends to usually be the product of decades of work, and then decades more simplifying it until the concepts can be expressed by any Wind of Magic. No fucking wonder it was worth 10 College Reputation to be the original designer, she functionally added a solid new tool to the arsenal of the Colleges of Magic.
Also, will admit, it's hilarious that we went from -1 to +15 College Favor just like that.
Which all 8 school can use.