From my Dad:
Every performance of Slydini's Helicopter Card is always a bit different. So much of the effect depends on the spectator and the audience. On 8/19/23 I was invited to lecture/perform by Tom Gentile at the Society of American Magicians Assembly #17's Annual Celebration entitled "A Magic Show". In this video, I perform the Helicopter Card Trick at my lecture with Karen as my volunteer. She was so much fun to perform for! I hope you enjoy this video as much as I enjoyed performing.