The “Devil’s Cups” comes with 4 metal cups and 3 small differently coloured dice.  The idea is for a spectator to hide a dice under a cup and to mix up the cups behind the back of the performer.  When the performer turns around, he can identify the cup that hides the dice.  No electonics are used.  There are multiple routines taught.

You receive a set of 4 metal cups, each measuring about 1.5 inches high and 1.5 inches in diameter at the mouth, 3 differently coloured dice, and a nice leather-like pouch to contain all the items.  You also receive a link to a set of video tutorials by Gariel Werlen.

There is a routine using only 3 of the 4 cups.  While the performer’s back is turned, a spectator hides a pellet (rolled up paper ball) uder one of the cups.  The performer gives instructions to mix up the cups.  He turns around and can identify the cup that has the pellet.  The effect is repeated twice, and in the third and final time, the pellet is opened to show that the performer has successfully predicted the very cup that contains the pellet.  

As a variation of the above routine, the spectator hides one of the coloured dice under the cup.  The 3 cups are moved around, and the performer later can not only identify which cup contains the dice, but also the colour of this dice.

All the routines are carried out behind the performer’s back.  The performer only turns around at the end to reveal the item under the cup.  All of the routines utilise the Green Neck Principle devised by Gariel Werlen himself.

Still another variation using the 3 cups is for the performer to not only identify which cup has what colour dice, but also the value of the number of this dice showing facing upwards.

This time, the performer has the spectator place not one, but 2 dice under 2 cups, and he can divine the 2 cups that contain the 2 dices.

In the last rountine, Gabriel uses all the 4 cups.  A spectator hides a dice in one of the 4 cups and after mixing the cups around, the performer can identify which cup contains the dice.

Once you understand the workings of the various routines, you can select and combine them to make a small act using the cups and dice.

There are no sleight-of-hand involved since the spectator does almost everything behind the performer’s back.

This is truly mystifying to the laymen and will even fool the magician.  (Rated 5/5 stars).