Nick Trost’s Subtle Card Creations Vol. 2 has a trick called the Magnetic Cards. It basically is a four ace trick that is similar to the Gemini Twins. His description of the effect: The performer and a spectator each hold a shuffled half-deck. The spectator follows the performer’s actions. They each remove a card from their half-deck. They rub it on their sleeve to “magnetize” it. Then, they replace it face up into their respective half’-decks. Each half-deck is spread to show that each “magnetic” card has attracted two aces.

I was experimenting with the “cut deeper” method that I wrote about here and came up with a variation. This version has a cleaner ending but requires a bit more effort.