Maxello Magic

You show five cards to a spectator, and ask them to think of ANY one of these cards. Now you place one of the cards into your pocket. Ask them which card they are thinking of?

They name the card being thought of, you remove this exact card from your pocket! A great match you say, But the trick can't be over. You ask if they can they name any of the other four cards? You show the other four cards are ALL THE SAME!