You will need to carry a specific deck in order to perform this. You cannot use this deck regularly for other effects.
With that said; the cleanliness of the effect is 100% authentic. Some elements of the gimmick need to be "broken in" in a specific way, but once that is done, the handling truly is as smooth as what the trailer shows. The effect itself is a 10/10 in my opinion. The layering of moments is pretty wild and rare. It offers a quick moment foresight where the spectators know what's going to happen but they refuse to believe it until you spread the remaining cards. Mathieu is the real deal; his thinking never fails to make me smile and question how much is not yet discovered in magic.