Synchro by Joseph B

This effect looks like a real miracle, it is completely impromptu and can be performed with a borrowed deck.
An incredible and impossible coincidence!
A sneaky method!
The spectator shuffles his deck and cuts a third from the top. He counts how many cards he has cut and that will remain his lucky number. At this point he will remember the card that corresponds to his lucky number in the other packet and he will apply a red sticker on the face of the card. The deck is reassembled and shuffled by the magician. He too will apply a sticker on the back of the card that corresponds to HIS seacret lucky number. Remember that the deck was shuffled!
At this point the impossible coincidence: the spectator and the magician have chosen the same card as can be seen from the stickers. Incredible !

A Borrowed Shuffled Deck
No Gimmick
No Crimps
No Sticky Stuff