(Commenting from this account since I don't currently have access to my PhindieGames account)
Thank you very much for playing and taking the time to comment!
Much of your remarks were considered but simply didn't make it to the final version due to the time pressure. After combining dice to see the spell, you can still remove the dice from the 'spell altar' if you want to try and make a different spell instead. My original idea was to also be able to reference the different spells you already discovered to make considering spells you already cast a little easier.
And balance... I completely agree that it's not balanced and you will get to a point where for the most part you can avoid most damage. Funnily enough, I mostly only took few fire dice and mostly focused on water and lightning because chain lightning/thunder are pretty broken in their own right :)
(and yes, sorry for not including audio controls and a back to menu button at end game screen)
Good spot on the pass button, it is a remnant from earlier design that I simply forgot to take out.