Effect:
After naming the QH & AS as the two most popular cards, you ask someone to name a third card. A prediction shows you knew the card they would name...
 
While all the other cards have different numbers on their back up to 52, the QH & AS have #1 and #2 on their back and the named card has #3. As a final kicker, you turn over the deck to show every card is blank!
 
No forcing
No pre-show
No sticky cards
No deck switch
No long reset time
 
Rule of Three delivers a simple, direct yet powerful effect as well as a highly visual impact.