Such a cute game! Big fan of the cheese. I think this would be a fun game to pass the time with if you decide to flesh it out after the jam Some additions could include more wizards, spell upgrades, different movement patterns for wizards/enemies and more. This prototype is a fun concept that is well executed, especially with the time limit in mind.
The only other constructive feedback I can provide right now is that killing the enemies took a long time (for me at least). Maybe this is intentional and/or I'm not in the target audience for games like these, but it is something to consider. :)
Great work!