Hey Lucas Stark thanks for your detailed feedback and for playing! I agree with your comments, all stuff like the feedback, extra spells, enemy types with resistances are things I Initially thought of and wish I of could have figured out and implemented during the 48 hours. Maybe in the sequel! I do like the idea of having a possible pickup that allows you control of your spells though... good idea!
I haven't noticed the shield bug yet but thanks for letting me know about it. I'm aware of occasionally when a spell happens twice in a row (usually Infernal Fury or Emerald Scattershot) it will stop working, it plagues me everytime I play through the game :( I tried to figure out for about an hour during the jam why it happens but alas didn't quite crack it.
Anyway I really appreciate your feedback and for your kind words about the game! Thanks again for playing!