has potential, but it's far too simplistic. Once you level certain abilities up enough, usually around level 6, the damage takes a significant nerf which never seems to be remedied. It would need more variation or content to be worth playing for more than an hour.
also, how did this get frontpage? It's got quality, and certainly has fun factor, but it lacks substance imho, carried by one of the most common and proven gimmicks in casual games, combine two.