"Now ... what shall you become?" Karyn snapped her fingers. "Of course." She thought about Jon's new form and suddenly Jon started to change. He felt himself shrink and get pushed into a very small shape. And after only a few seconds, Jon had become the wishing stone, exactly the way it looked when he got it through the mail.
Karyn bent down and snatched it up. "Now," she said, with a smile. "What should I wish for?"
