Hah! Thats exactly what the players want you to think.
Then they pull crazy stunts out of nowhere with impossible creativity or do something incredibly foolishly brave that you'd think they would be too smart to do. And then they succeed anyways.
Edit: Eh, I prefer Strands of Fate, so that I just look up any Advantage and with a few creative twists, turn it into a way of manipulating nuclear sunfire.
or just y'know….purchase Control Nuclear Sunfire.