Very Broughlike! It took me a try to two to get the rhythm of it, but it's very nicely arranged and nicely balanced.
If you move forward with it: one thing I noticed is that I went through a cycle where most of the spells I had required yellow runes, and yellow runes kept not coming up, so I just kind of cycled endlessly through picking up a lot of green runes and casting the one spell that didn't require yellow runes. I can imagine some sort of "refresh all spells" option, though I don't know where you'd put it. (Upper right = "advance + refresh all" instead of just "advance"? I don't know.)