The magician chooses 2 cards and puts them apart on the table. Now, 2 more cards are chosen by two spectators, and… a sequence of effects begins. • Effect #1: the back of the spectators’ chosen cards matches with the magician's. • Effect #2: also the face of the spectators’ chosen cards matches with the magician's. • Effect #3: all cards are turned face up and they are found to be all red, while the four chosen cards are the only black ones. • Self-working!