Based on a principle by Pavel. Easy to do! Even with only one loser card, the spectator will never win.

Pavel
(1945-2011)
Pavel was a great magician and creator. Here are only a few of his awards: 1968. Best Trick Award, Academy of Magical Arts, Hollywood 1982. 1st Prize Invention, FISM Lausanne 2002. Creative Fellowship Award, Academy of Magical Arts, Hollywood