EFFECT - The magician spreads open a stack of four blank cards. He squares them up and replaces one of the cards with the ace of spades. When he spreads the cards open this time, all the cards are found to have changed from blank to aces (ace of hearts, ace of clubs, ace of diamonds and the ace of spades). He squares them up again and he replaces the ace of spades with the five of spades and spreads open the stack once again. THIS TIME ALL CARDS ARE FOUND TO HAVE CHANGED FROM ACES TO FIVE OF HEARTS, FIVE OF CLUBS, FIVE OF DIAMONDS AND FIVE OF SPADES.