Seeing is Believing (keychain) by HimitsuMagic - Trick Audience Participation The online instructions also includes

The online instructions also includes Dave Bonsall's Full Lecture

The OG Transpo - The magician secures a selected card in a card box and under the spectators hand only to cause it to change places with another selected card instantly

The low-poly design represents a simplistic one

Although there are sleight variations with each card

You show four large transparent plastic envelopes

Seeing is Believing (keychain) by HimitsuMagic - Trick Audience Participation The online instructions also includesThe audience felt that a card was randomly selected from the 52 playing cards (8 of Heart in this example). The magician showed the key ring, and the prophecy on it reads the card "Your card". Just as the audience smiled knowingly, the magician turned the key ring, and "your card was slowly transformed into "8 of Heart".