Biff felt a warm sensation from his pocket, the watch was reacting to the stone. Biff pulled out his pocket watch worried about what would change this time, but luckily nothing seamed different.
"So that's it Biff has a magic pocket watch that repels magic changes but magic can still be used to transport him from one place to another" Jon said.
"Now that's convenient, what do we do now?" Karyn asked.
"First I wish Karyn and I had ordered drinks from the coffee place in this store that will be ready in approximately 30 seconds" Jon said.
With that their drinks came up, they took them.
"So I'm thinking we wish Biff and Sara back to normal and go back to square one." Jon continued.
"Good idea, especially with what Biff said happened to his grandfather, but let's wait we shouldn't use the rock so close to Biff" Karyn said.