I'm a magical nuclear power plant - or a magical nuclear bomb, depending on how you look at it: I can both draw and generate (draw as in from sources other than myself, generate as in from no determinable source other than myself) enormous amounts of energy. I specialize in both the creation and breaking of both shields and curses. If you think it's a matter of balance, then it's possible, though as far as I can tell it's merely a product of enormous amounts of energy and almost no control (my wife calls me a 'magical battering ram' to her 'magical lock picks').
When I want to do something, I simply impose desire and as much energy as my instinct tells me I should use to achieve my needs or desires.
I also like to make things, both mundane and magical. I sometimes get inspiration from the bottle.