The die of fate

"Welcome to Omni App: Chance Edition! In the second drawer of your desk there's now a die," the text scrolling over James' screen announced. He opened the drawer and sure enough, a die that never had been there before sat on top of a post-it pad. James gasped as his pulse began to race.

He got up and looked around to see if someone was filming him for a prank, which he'd had to admit would have been pretty epic even if he was on the receiving end of it. Nobody looked like they were willing to get fired for wasting corporate time on pranking him.

"Wish for something and roll the dice, on a two to six, the wish will become reality in a timely manner and only you will be aware of the changes and not negatively included. HOWEVER: On a one, you might be included in the wish in an undesirable fashion, but you will be aware.

"If you wish to undo any wish and roll a one, the wish can't ever be undone. If you want to undo more wishes, they must be rolled for individually. A failed undo won't stop you from undoing wishes done before it."

"You can only roll once every hour. Dramatic changes beyond single individuals will leave the dice inert for longer periods, from down to one day up to ten years. You will be made aware of the time it will take before you roll so you can moderate your wish."

James didn't know how to respond but shrug his shoulders. If it's real and not a prank, it's a gamble. It would be worth a try though, a one in six chance to getting in trouble and then you have a one in six chance to fail to undo... whatever.

Now, what could James do that would prove the dice isn't an elaborate prank?