Amazing Card Trick

Hey everyone, I've been doing magic for about 5 years now, and I was absolutely blown away when I saw a trick by streamer and YouTuber "Rickyedit". The trick is from this video segment: https://youtu.be/aR27KoygnVk?si=Dnr4V02VggoL0hLR&t=878, I mean, I have my suspicions, but I just can't quite grasp the principle behind it. Does anyone know how to perform it and have any tips to make it look so clean?

Thanks in advance everyone :)