I was playing the game casually with my sister and noticed that in the ruins, just outside the portal to the maze, there is a light crystal that gives you the light unicorn spell. It would only be a small detour from the current any% route, so if there is any use for it, it wouldn't be hard to save time.

Light unicorn gives you increased run speed and a double jump... When going in a straight line it's slower than spamming the dash, but I'm wondering if there might be any uses for it