I really liked the green mana system, it was cool how it built up your powers, but drained over time, made me think quickly in what would otherwise be a slow mage fight. Also, good job fitting in a boss, as well as all of the powers and enemies, all very well done for the jam period. In one room though, I entered and the game dropped to a handful of frames per second. Not sure why, but it was only that room, after the boss and a bit before the end.