Shapeshifting Sarah

"This is absolutely amazing! I wonder if..." Sarah said to herself, thought a few more seconds, concentrated, and then continued
"I wish I can change myself at will into any person I see or have seen and I wish that I have while being this person all skills this person has ever developed. Furthermore, I wish that I can morph my clothes into anything I can imagine and I wish that I can assimilate the knowledge of persons just by touching them."
The stone glowed.
"Now, what might be a good test." She turned around, saw a poster of Lucy Pinder, and knew suddenly who she wanted to be. She concentrated and felt her body changing.

"Wow, this will get interesting" she exclaimed, while watching herself in a small mirror. Admiring her new look, she dropped the stone.
When Jon stepped in the room, He knew instantly what must have happend and grabbed the stone. Because he had no idea what Sarah has wished for, he played save. "I wish that the last wishes spoken by Sarah will not effect my mind and body."
Before he was ready for his next wish, "Lucy" stood in front of him. Taken by her beauty he hesitated a moment to go on.
Quickly, "Lucy" touched the stone. "I wish Jon can't speak." Jon tried to make his next wish, but he was not able to say a single word. An amused "Lucy" decided to end the game. "I wish Jon is now in the middle of Iraq."
Jon and the stone which was basically in Jon's hand disappeared.
"Damn! I didn't mean the stone should be there as well." "Lucy" exclaimed annoyed. "Wait, maybe the stone is not lost... Jon is in a foreign country and he can not speak a single word. He can not trust anyone. All his hope rests on that slut Karyn...." With a smile she concentrated on a picture standing on Jon's desk.
"....and she will find you and you will be glad to give her the stone to undo the wishes." the sexy voice of "Karyn" continued the secentence.