Turncoat Prediction glass Can also be visibly changed

Can also be visibly changed in front of the audience with just a shake of the hand

This is not a basic "bare bones" description

The magnet makes this card box practically FOOLPROOF

A reasonable price for a unique effect

Turncoat Prediction glass Can also be visibly changedEffect : The performer displays an envelope, which he states has four large (Jumbo) Cards. One of these cards will match any card selected by a spectator. A spectator is asked to name any card. The performer removes the four cards from the envelope back out, then slowly turns them to face audience, to show their selected card is indeed one of the four. The audience is amused, because each of the four cards displays the Ace to King of one of the four