Force the 8 of Diamonds from a deck of cards, check youtube with the search “forcing a playing card” there are plenty of tutorials on there. produce the wire, this can be in full view all the time, pulled out of your pocket or picked up from the ground depending on how you want to perform this reveal.
Burn the wire with a lighter to reveal the spectators playing card in a very spooky way or you can simply dunk the wire into a cup of hot water, tea,coffee etc.
(must be over 80 degrees)
Simply pull the wire out of shape to reset pop it in your pocket and you are ready to repeat this effect any time.
Important: DO NOT LEAVE THE LIGHTER UNDER THE WIRE FOR TO LONG AS THIS WILL DAMAGE THE WIRE.