Make a SuperHero Champion
http://img13.deviantart.net/a22a/i/2014/077/8/8/shazam_by_bramleech-d7aoaym.jpg
I think this would be the greatest champion ever. The foundation for the champion is already set, first you take Malzahar's model, buff it up, give it a visual overhaul, make it very aerodynamic with cool flying tricks courtesy of Sol, make it an Ad champion who uses superpowers and realize on punching as a basic attack.
I found prefer a lightning theme for him as it would probably be the coolest
https://s-media-cache-ak0.pinimg.com/originals/3e/34/23/3e342307664d04cc22ae91202e1a4546.jpg
But really any hero type would do as long as it's AD maybe hybrid
