C Through is an effect where you visually push a torn off corner of a spectator's selected card into an empty tic tac box.The spectator can check the corner to confirm that it matches their card.For your consideration:1) No gimmicks2) So visual and direct3) Everything is examinable4) The spectator can hold the box and can keep it after the effect5) You can also do it with bills6) Easy to do7) Quick resetIt is a great visual piece of magic you can do without any gimmicks. So check this out.