Cool twist, I was expecting a betrayal, but not that one. Nice subversion of expectations.
I was starting to get bored on my first playthrough before I realised that spells were increasing in difficulty as the fight advanced. This ended up being pretty challenging.
I feel like more spells would better convey the theme of distrusting your own magic, but then again we only had one week. Interesting interpretation nevertheless.
I really like your visuals and how cohesive everything looks and sound, fine entry.