well to be fair and not have "wishing" or "power of powers" powers I'd say to make matter or energy in any way I see fit, I want to dress up BANG top hat, monocle, and old style suit with tail instantly
, a car displeases me BANG it explodes in a feiry ball of death
I find that walking around a lake is too much trouble BANG all of a sudden whereever my foot touches the water it becomes solid