Oh gosh, this is so beautiful! The art direction is incredible, and the music really added to the drama of the conflict!
I really appreciated all the small details in the sound design and UI animations. It made it a great sensory experience! However, I had a hard time understanding what hurt the black void and what exactly the various color buffs did. I wish there was a little more feedback that told me if I was doing the right thing to win the battle, like if there was a health/progress bar of some kind. It made me unsure of if there is ever an end to the battle (is there? :o )
A really fantastic game jam submission, though; I'd be really excited if you decided to develop this game further!