Well, good game, I enjoy it very much. but I think that I get a Little confuse about to what to do in the game. You can add a start UI where you can show the title of the game, some images related with your game and the mechanics of the game, you could add a brief story about the main character and buttons for play the game, settings like volumen sounds and light, and a credit button that will show us the creators of the assets in your game, the best of lucks in your game!! 

I think the model swap pallet thing is super dooper cool and innovative, great work!

Great application of the theme and interesting gameplay. Though I wish the summoning screen had the information for that body part as you select them since there's so much text in the book to remember.

Interesting concept. A few too many mechanics for my taste but good job on the submission. The gameplay felt pretty good. Would have preferred mouse control for selection.