Wow, thanks your feedback. I really appreciate the time you put into it. Regarding the attacks, the arc is supposed to represent a "slash", that cuts a single enemy(if they are too close together it actually hits more then one, that's a bug xd), the second one is meant to be a fireball that explodes, thus AOE. And the "spell cost" upgrade, yea that's my bad I somehow always assume everyone will just get everything like I do, but that's never the case (obviously xd). I'll make sure to be more clear on my visual representation and the way i form text. Thanks again for the feedback!