Jon's Grandfather Did It

"My grandfather did it," Jon said. "Before sending me the stone, he made a wish that the stone would have limits." "What?" Karyn asked. "Why would he do that?" "He didn't think I had enough responsibility." Jon dropped his head. "He didn't trust me." "Oh, come on, Jon. If he didn't trust you, he wouldn't have given you the stone in the first place. Even with the limits, it's still very powerful." "I suppose. But I always thought that me and Grandpa ..." He fell silent for a moment. "Oh, I wish I could ask him why he did this." "Jon, the stone!" Karyn yelled. "Huh?" Jon asked, as the stone glowed.