Thanks for trying it out and for your feedback! I'm glad you enjoyed it!
I do feel like I should have balanced out the spells better. Seems like dealing with the flying enemies is giving people trouble. My intended optimal strategy for the ghosts is dropping the orange block on them with good timing. The block can defeat them with one hit. The eye enemies have the most health so they are definitely the hardest to deal with. I would usually get them with the orange block or wall jump to their level and shoot the flames or the solar blast (the yellow power) at them. Though I probably should have made more spells that attack upwards.
I would like to revisit this concept at some point with more spells and enemy types.