Introducing the strangest three card trick EVER!

Two jokers and one "odd" card are shown. The odd card is seen to be completely blank. Now the trick is for the spectator to follow the odd card, it is made even more "odd" by the magician signing his name right across the face of it.

The spectator then signs their name right across the back of one of the jokers and places their hand firmly on top, so the performer can't get to it! The magician's signed blank card is turned face down next to the other face up joker while the spectator's hand is still on top of their signed joker. However, when the magician's blank signed card is turned face up, it is seen to have changed into a joker with NO signature whatsoever! When the spectator takes their hand off their signed joker and turns it face up, it is seen to be the magician's blank card COMPLETE with the magician's signature with the spectator's signature STILL ON THE BACK!! The cards have changed places!! Only three cards used!