Please note that this video is in Vietnamese. There are some English subtitles, but for the most part you will get the instructions of how to make the gimmick and how to perform with it from the visual contents of the video.
From the brilliant mind of Vietnams top magicians Duc Thinh and Hoang Sam comes a very clean mis-made card effect. A corner of the spectators signed card switches inside out and switches back with very little movement.
1st edition 2016, length 16 minutes.