What if I just throw Hawking under the bus and ignore the fact that it would take a planet or two of mass to bulk up the black hole? I learned from Wiki today that a sustainable black hole requires something like the mass of three of our suns. Well there's no way to import that kind of mass into my pet disaster, and if there were, it would consume the entire earth in a milibleep (Orkan form of temporal measurement). So in spite of my desire to conform to the laws of physics to the extent that I sorta-kinda understand them, it looks like the magic wand will be required in liberal doses.