No wishes were made that night, but the next day there were, including one very important one. It was the only thing Jon could do to keep anything bad from happening when using the stone.
Jon grasped the stone in his hand. "I wish that wishes made with the stone that would cause pain or destruction would not be granted." The stone glowed.
"Now to try it out. I wish that my hand would be cut off for only the next ten seconds." The stone didn't glow. Jon smiled. "Good."
He went to school to meet up with Karyn before school started.
