you do need to put a bit of showmanship to take the heat off the cards, but even a beginner like me can do it, and the effect is actually quite strong. I performed it at least 20 times, always with great results, and no one could figure out the method. Excellent for intimate settings, or pre-show.
I disagree with the description, the effect has a teeny tiny bit of set up, nothing much really, but it takes some practice to reset in front of the spectators in case you want to repeat the effect. Still, I mention this just to be throughout. The effect is strong and fun to perform. Highly recommended!!