What is YOUR mutant power(s)?
Take some time to think about this. If there were such a thing as "mutant" powers (like the X-Men), what power(s) do you think you'd have?
Of course, you can take in account what powers you'd "want" to have, but sometimes what you want is not what you get ;)
Be creative, too :P
My powers would be healing in origin, kind of like how a 'white mage' would be. I'd also have protective powers for not only myself but to aid others as well (shields and the like). I could also see the powers developing in such a way that I would be able to focus the "holy-type" energy into concussive blasts to injure my foes ;)