I wonder what other insanity I can unleash? Jon thought. And with that, he decided.
"I wish that fire was called ice and ice was called fire." The stone glowed.
Okay, what else? he thought. I know! I got it. "I wish that people normally have five fingers and a thumb on their hands." The stone glowed and suddenly Jon had an extra finger on both hands.
Then something occured to him. He couldn't reverse any of this. He got so wrapped up in what he was doing, he had forgotten.
He looked down at his six-fingered hands. Maybe it wouldn't be too bad. He'd just have to be more careful when he made more wishes.