I would start polluting like a madman, dumping oil into the ocean and filling the land with garbage, all while leaving idle vehicles on for long and pointless hours. Eventually, those meddling kids will come and try to stop me. That's when I whip out a good old fashioned six-shooter, plug the kid who got stuck with "Heart" and steal the ring. There, now it doesn't matter what I do, because it is now impossible for Earth's greatest hero to be summoned! MUAHAHAHAHAHAHAHA! I WILL DESTROY THE ENVIRONMENT AND SELL PURIFIED AIR AND WATER FOR LUDICROUS PRICES!