I'd control the air.
Reasons:
You can fly. (tehnically, you'd be lifting yourself together with air or something like that.
You can be invisible. Now you see me, now you dont, cos I surrounded myself with a cloud or a smoke.
You can perform telekinesis. Nope, I might not be able to perform real telekinesis, but I can sure as heck lift the entire air mass around anything I want. ha!
Shock waves. Air +air +air+ many lots of a lot of air = pressure, huge amount of pressure in a second = kaboom. If I wanted I could send anything flying away in a matter of second.
Tornadoes. Oh no, people surrounded me and are trying to get me. Too bad Im lazy and I dont feel like flying atm. I guess its over. LOL, nope, big ass tornado + air bubble which will let you stay still inside of it = WIN.