You have a card selected and put back into the deck. The card magically turns face up in the middle of the deck.
By a mirror effect, it will be reflected on another card, then disappear and reappear.
You remove it from the deck, it comes back, once, a second time, then a third time, changing color.
Eventually all the cards in the deck become the same and yet different from the chosen card, and you put it back to examine.