Haunted Die by John Kennedy

A die mysteriously turns over by itself inside of a clear glass, revealing the position of a spectator's card!

Six cards are removed from any deck, then a spectator freely selects one. You shuffle them and lay them down in a row. "Perhaps you're wondering why I'm using only six cards," you say. 

Reach into your pocket and bring out a small cloth bag, explaining "The reason lies inside this small bag where I keep the Haunted Die." Dump a black die with white spots into a glass and continue,"Please concentrate on your card and watch the die." 

While everyone is watching, the die slowly turns over by itself revealing a different number. It looks eerie! The spectator turns over the card at that number, and sure enough it is his card. 

Haunted Die includes the black die, cloth bag, and special gimmick that makes the die turn over by itself. Use your own glass.