There is nothing to find as the four envelopes and colored cards are UNGIMMICKED and there are no other hidden predictions

Printed in USA by The United States Playing Card Company (USPCC)

He picks it up again and places it back

The spectator is asked whether that color is same as the one held in their hands

Bonus section: A tutorial on Shin Lim's coin thru glass(sucker punch coins needed)

Crossed Thought | DARYL Stanyon There is nothing to findThis is a mind blowing effect that is sure to amaze any audience. A spectator counts 10 cards, which are then divided into two packs of 5 cards each. One packet is given to a second spectator to hold, sit on, or place in his pocket etc. The first spectator then merely THINKS of one of his cards, before securing them between his hands. With a simple snap of the fingers (and no moves!) the first spectator counts his cards and finds there are now only 4.