This NEW effect by Paul Gordon is a commercial powerhouse. The effect is that four blue-backed blank-faced cards mimic the King of Hearts. You end up with five King of Hearts. But, all five magically have five different colored (and style) backs. The next surprise is that all five turn blank!
Aside from being pretty easy, this effect is a stroller! Instant reset, too. But, it can also be utilized with a regular deck as a table effect. Two handlings are taught and the top-quality bespoke cards are supplied. Once you fully understand the effect and handling, you will realize it's utilitarian.
You're gonna use Paul Gordon's Eye-Popper...a lot!