It is an illusion. It is a good illusion, but an illusion. Of all the Supernatural things I believe in, Magic is NOT one!! If it were not an illusion, he would not have needed the sheet of paper. BUT it was a good one!!
l had to watch it 3 times and if that was me holding up one corner of the paper l would have let go right of the bat and fainted if it was for real. But it was fun to watch.