This is a jaw-dropper of a color-changing deck routine. In effect, a spectator chooses a card, which is noted and shuffled back into the red-backed deck. The two black Jacks are removed and used to find the selection in a flashy manner. Offering to repeat, the performer clearly places the selection reversed into the middle of the deck and then places the two Jacks at the face. With a mere cut of the cards, the Jacks trap the chosen card again. Upon inspecting the deck, the selected card is seen to be the only red-backed card, as the remainder of the deck has become blue-backed!

The color change to blue backs comes as a complete surprise because of Doug's casual handling throughout. There are seemingly no intentional proving moments or "shows" that the deck is red-backed, the cards are loosely shuffled three times, and the two sandwich effects that precede the color change are strong effects in their own right. In many color-changing deck routines, there are moments when the cards must be handled quite carefully for fear of prematurely exposing a wrong-colored back. This careful handling often results in cards that are gripped very tightly, or moved very carefully, and although this is an obvious tell to another magician, it is also a subliminal tell to a lay audience. You'll find no such moments within this routine.

Assuming you are changing the deck from red to blue, remove the Eight of Hearts, Jack of Clubs, and Jack of Spades from a red-backed deck. Discard the remainder of the red deck. Now remove and discard the Eight of Hearts from a blue-backed deck. Place the blue-backed black Jacks atop the blue deck. Sandwich the red-backed Eight of Hearts between the red-backed black Jacks and place that sandwich onto the blue deck. So, from the top down, you have a red-backed black Jack, the red-backed Eight of Hearts, the other red-backed black Jack, the two blue-backed black Jacks, and the balance of the blue-backed deck (from which the blue-backed Eight of Hearts has been removed). Case the deck in a red card case and you are ready to begin.

During the performance of the two sandwich effects, you will apparently flash ten different red backs. None of these flashes appear contrived or forced; they are naturally choreographed into the sandwich effects.