Royal Revision - Royal Change

A spectator is asked to assist on stage, while the rest of the audience becomes witnesses to a grand prediction. A 20 x 30 cm card, signed with fix, is given to one of the spectators and placed in an empty frame. All can see it except the assistant. The magician then shows a set of large cards. What the assistant doesn't see but the others do is that all the cards are blank backs. So the magician cannot make a mistake. The assistant picks a card without showing anyone, and the moment comes to reveal the prediction: "CARO CARDS ESO!" The assistant picks a card again, surprising everyone by showing a lady card: "LADY CAROVA!"...no fear, the magician can solve this too: slowly pulling out the eso from the frame, it visibly transforms into a lady! Of course, the card still bears the spectator's signature!!! You get everything you need for the trick, including large cards specially made for this performance.