Imagine 4 different spectators each have a card freely selected. The cards are then switched as many times as the spectators want. Once the spectators are satisfied, you turn over the prediction that has been in FULL VIEW since the beginning. The prediction shows the EXACT selection chosen and who will end up with EACH CARD!
USE LITERALLY ANY PREDICTION (Card, Bill, Anything that fit in the gimmick).
The prediction is on the table since the beginning and remains untouched until the trick is finished.