Think of that spell that lets you do anything you want.
Most magic has an effect that you have to make do with and apply to the situation at hand. You know the one, though: that spell that lets you perform any feat of your choice, without that choice being made when you prepared spells at the start of the day. All you need do is word what you want exactly and you can make it real.
Which spell were you thinking of? Wish? Miracle, perhaps? Forget those; too costly. I'm talking about the Level Zero Wish here - prestidigitation, baby!