The magician shows a wooden pillory and asks a spectator to come onto the stage and secure the "victims" head and hands in the pillory.
He then show three swords to the audience before he pushes all three swords through the neck and wrists of the "unlucky victim". The points of the swords can be clearly seen. With a magic gesture he then removes the swords and frees his "victim" which is unharmed when leaving.
Very visual magic and easy to perform.