I really liked the intent of the game! The combo'ing of various abilities and powerups is always a really fun idea. However, even with a good bit of messing around (including various browsers), I couldn't get the cast spell action to work. I was able to make the connections, but didn't see any visible changes to damage I was doing. Maybe this was because the cast action is the only thing affected by the upgrades/changes. Probably worth spending a bit more time thinking about how to simplify the controls a bit.
Great effort on putting it together.!