I’m pretty sure that was a full performance Robert - JB is awesome at these types of effects, very simple looking with a minimum of process but with a very fooling outcome. The spectator shuffle at the outset was the convincer for sure!
You are right, the selected card needs to be on the top of the deck before the spectator does the « cut ». The effect is awesome, as most of John Bannon stuff, but there is definitely something hidden in this video.
There's nothing hidden in this video, I know the method and it's very clever indeed... spectators really can shuffle the deck before the Two cards are placed. 😊 @Sc2Anonymous