This is not an earth-shaker but it can be a nice interlude to something heavier. I’ll explain the basic idea with small and regular cards. The basic plot belongs, I believe, to Roy Walton, the clever cardman from Glasgow, Scotland. Several other magicians have explored this effect and have come up with good variations (see the one by my friend Simon Lovell which uses Jumbo cards).
A card is selected from a miniature deck and placed onto the table. The four Aces from a regular deck are displayed. Then the magic happens. You cause the Ace that matches the suit of the selected card to reverse itself. Then the matching Ace and the selected card magically change places. The regular card is seen to be the selection and the miniature card is seen to be the Ace!
A regular deck and a miniature deck.
The A is on top of the miniature deck followed by the J . Remove the A , A, J and A from the regular deck. Set them in this order from top down: A , A both face down, J face up and A face down and keep them in a separate packet.
Shuffle the small deck keeping the A and the J on top, then force the J . To wit: Cut the deck and keep a little finger break. The right hand cuts small packets from the top placing them on the table. At the same time ask a spectator to say ‘stop.’ At the ‘stop’ the right hand cuts all the cards above the break and tables them on top of the tabled cards. Perform a Double Turnover showing the J . Turn the double face down and deal the top card (A) face down onto the table.
Pick up the four regular cards and do a face down Elmsley Count to show four backs. Casually move the top two cards to the bottom without reversing their order. Flip the packet face and do an Elmsley Count but place the last card on the bottom. You have shown four Aces. The A is seen twice but the color sequence alternates properly.) Table the squared packet face up.
Ask for the suit of the selected card (Heart) and spread the Ace packet to show that (apparently) the matching A has turned face down.
Turn over the miniature card and show that it is now the A.
Turn over the face down card in the Ace packet and show that it is now the J .
The same effect can be presented with a regular deck and four Jumbo cards.
You can actually display the four Aces at the beginning of the trick by using Ed Marlo’s Atfus Move. This move was taught on page 25 in Colorado but briefly, the J is the top card of the deck and the four Aces are in your right hand. Place the four Aces face up onto the deck (the A is the uppermost card.) Square the Aces while secretly adding the top card of the deck (J ) below them so that the right hand now has a five card packet. At the same time the right thumb lifts up the top card of the deck (indifferent card) but you keep it separated from the five card packet with the right thumb tip.
The left thumb peels off the top card onto the deck (A) and apparently you re-take this card below the right hand packet. What really happens is that the right hand brings its packet over the face up A to apparently pick it up below the packet. immediately the right thumb drops the face down card onto the A and the right hand is taken away. On top of the deck a face down card is seen and the illusion that you have taken the A face up under the packet is perfect. The left thumb peels off the next Ace onto the deck and this Ace is taken face up under the right hand packet. Similarly the third Ace is peeled off onto the deck and then taken face up under the packet. The J is face down, second from the top of the right hand packet and the A is second from the top of the deck proper. Table the deck.
Turn the packet over and perform an Elmsley Count, placing the last card on the bottom. Table the packet face up and proceed as above.