4X4 by Quique Marduk - TrickThe illusionist hands an envelope with a prediction to a spectator to hold it until the end of the routine. Next, he calls 4 spectators and places a plate with a number on each one (numbers 1 to 4) hanging from their necks. Then he shows a display that has 5 envelopes and asks the 4 spectators to choose one envelope each, and when they open them they will find a card that can be red or black. Each spectator visibly holds the card in his hand. Now the