You borrow a deck of cards, have a member of the audience shuffle the deck, have another spectator cut the deck into three piles. But with your X-Ray vision, you are able to see through the backs of the cards to name the top card on each pile. Remember, this is a borrowed deck that has been shuffled by a spectator before it is cut.
You can also view this trick on YouTube at https://youtu.be/x37v_32MPh4
You can see all the previous magic lessons here.