The idea of imitating the wand movements with the mouse is really good. I liked it a lot.
The only suggestion I can come up with is to reduce a bit the text at the beginning or introduce a key to skip rapid ly. Also, it would be good to explicitly state in the introduction text how to summon the spells (I had to lose, come to the itch page, and read the description to understand what to do).
Apart from these minor things, good job!
P.S.
Come to give a check to my entry, I would appreciate your feedback :D