After nothing interesting seemed to happen, Jon decided to just finish up the rest of his homework and go to bed. He was too tired and just wanted to deal with whatever his wish did in the morning.
But the product of his wish wouldn't wait until morning. As Jon's head hit his pillow, a gray mass of gasses began to form above the center of Chesapeake Park Lake. And as the hours passed by, this gray cloud began to expand, until it was the size of a person, maybe a little bigger. It was at this time that the cloud began to move. It had a purpose. It needed to change people. Some for the better, some for the worse. It was the reason for its being. It was created through magic and through magic, it would accomplish its mission. It was totally devoted to its purpose. Nothing or no one could stop it. It was unstoppable and indestructible.
And as Jon slept, it moved out of the park and towards one of the nearby houses, knowing exactly who to change first.