Pretty nice game ! I liked that you have multiple magic types, I feel like you could add more to the game like maybe different enemy types or variation even on the magic.
I did find some bugs though, I'm posting them here in case you wish to fix them :
-Even if you die, if your magic was used and it touches enemies the score will rise up a bit
-I went to pause and quit to menu and I heard the sounds of the enemies getting hit (i think)
-The snow magic didn't have texture or I couldn't see it ?
-Sometimes my magic didn't hit, I think the collision box should be improved