its quite simple. it changes all of the cards on the last page, but they look similar. still uses king/queen/and jacks, but changes the symbol thingy (diamond/spade/heart/club)
It Changes all the cards. Try to memorize two cards, I bet you won't see one of them once he says he has "removed" your card.
Say they only show you 2 cards. One is the King of Spades, and the other is the Queen of Diamonds. Lets say you pick the King of Spades. Then they make it "dissapear" but really all they do is show you the King of Clubs(same color as the spade) and the Queen of Hearts(same color as the diamond). But you dont notice that because of the same colors, it just plays with your head kinda.