I don't see listed how to make blank magic scrolls, so here are the formulas:
blank paper + ...
pixie dust = blank witch scroll fire essence = blank fire scroll air essence = blank air scroll water essence = blank water scroll earth essence = blank earth scroll
Is that new? I've made all of my scrolls by pixie dust + paper to produce a random blank scroll, giving me a 20% chance to get the one I wanted. On the one hand, it's a pain and a lot of loading. On the other, you can access pixie dust a lot earlier than essences. I'm hoping that this is an alternative way to make blank scrolls when you're higher level and essences are easier to find (which case, have you tried void essence + blank to see if it always gives witchcraft?).