This is the classic twisting effect on steroids with multiple changes and a climax that hits you between the eyes. First you show four cards that have the same face and back designs, for example four kings of diamond with black backs. When you turn one king face up, they magically all are face up. Suddenly one of them turns upside down but it has a different colored back. Then two more different backs appear. Then all revert to the original backs. The climax is that all kings change to four different aces that have each a different back and each card is shown and tabled individually.
You will need three different aces with different back designs. A double-facer (king on one and the fourth ace on the other side). Two identical kings (same as the one on the double-facer) with identical back designs which is different to the back designs of the three aces.
