Simply an amazing three card trick, printed in Bicycle.
This effect has been around for many years, but as I still use it myself in my act, I thought it would be appropriate to start selling the item.
Performed around a gambling story of being in Las-Vegas, and you have to guess where the blue diamond is, but you never succeed, and the cardmad starts to play games with you, until the SURPRISE FINISH.
If you do not own this effect, and are fairly proficient in sleight of hand, then THIS IS FOR YOU.