Ghost Ink by Red Dragon

The magician asks a spectator to draw and sign a card from a deck. The card then disappears into the deck. The magician now draws a black line with a marker on the back of the card at the top of the deck. A magical gesture, and the newly drawn line visibly disappears! When going through the cards, it becomes clear that the line has magically transferred to a card in the middle of the deck... to the card signed by the spectator!
A stunning effect!
• The ingenious gimmick is made with Bicycle cards.
• To enhance the visibility of the black line, the gimmick comes with a red back.
• A link with detailed Red Dragon video instructions will be provided. The instructions are in Italian, but thanks to the video, the functioning of the trick will also be clear if you do not understand Italian.