V-ring by Jean Baptiste Ponzo

-A ring (or other object like a piece) is placed on a case, and without touching it, with a simple hand movement, it disappears and reappears inside the case itself.
-A card is chosen, signed, and lost in the middle of the game. A ring is placed on top of it and disappears in a single movement. And, slowly, the game seems to double in thickness; The ring appeared in the center of the game, on a single card, that chosen by the viewer.
Everything can be given to the exam, the rounds are impromptus, feasible with a game, a case and an imprinted ring.