This is kinda cool. One thing I'd recommend is toning down the wobbly-ness of the text, as it's kinda hard to read (I'm trying to imagine how my dyslexic friend would deal with it and wincing). And the flashing "game over" text is probably a seizure trigger.
I definitely got confused about why nothing was happening when I clicked on the spell in the very beginning; took me a while to figure out that I had to select a target as well (even though there was only one target). I'd recommend adding a line into the description about that. I figured it out quickly enough but it felt a bit weird. Otherwise, this is a decent bit of fun.