Time control. This applies to aging as well. And also, anyone I happen to be in direct physical contact with is also affected by my powers. In addition, I'd also be able to affect the person I'm in physical contact with while not affecting myself.
So I'd have the power to move time (in general, but also being able to move it for everyone except me and the people I'm in contact with) forward, backward and pause; I could stop, speed up, or reverse my aging (giving myself longer, shorter, or unlimited life); and I could stop, speed up or reverse other people's aging so long as I am in direct contact with them (then I could keep my girl young forever, and I could tackle people I dont like and cause them to become so old they turn to dust).
Plus, I could leave my enemies frozen in time forever. Or pause time for everyone but myself occasionally to mess with people's heads.
Oh yeah. Mischief aside, I'd probably spend my life by pausing time and defusing suicide bombers before they explode or going back and preventing 9/11. I could make it so that WWII never happened.
And actually it occurred to me that if I stop my own aging, I cannot get closer to death. So if I got shot while my aging was paused I couldnt die because to die would be to reach the end of my life. If I pause my aging at a point before death, there is no possible way I could die because I haven't gotten any closer to the end of my life. So I could not die. On the other hand, this situation could instead just cause a paradox that destroys the universe. I'll try to refrain from using that power...