This is a very interesting version of the classic MIKO effect, which was put out by Paul Diamond, circa 1980's.    The most interesting thing about it:  it comes with an extra matching gaffed die, on which the opposite sides do NOT add up to seven.   So after doing the standard MIKO effect, and having the spectator add the sides (getting seven), you can do a simple switch of the die and if they check it out, they will see other sides that do not add to seven.   (The opposite sides on the gaffed die will add to six or nine, depending which numbers they choose)

The instructions from Paul Diamond don't really explore how to fully use this extra die, so I will include instructions for my own routine with these special 21st Century MIKO dice. 

The basic MIKO effect, in case you don;t know it, is the classic 3 1/2 of Clubs prediction.   You show six facedown cards, and the spectator chooses one.  You show the other five cards to be a random mix of values.  The spectator rolls a die, and then adds the numbers on the top and bottom.  Because you are only an "average" magician, you explain that the chosen card is a prediction of the "average" of the two numbers, so you ask the spectator to divide her total in half.  "For example, if your numbers total eight, this card will be a four spot.  If your numbers total ten, then half of that would be five, and your chosen card would be a five also."  She announces the result of dividing her total.  It is "three-and-a-half".   After a moment of feigned chagrin, the magi turns the chosen card faceup and it is the 3 1/2 of clubs!

Although Harold Sterling invented MIKO about 75 years ago, it still gets a good reaction from lay audiences.   The addition of the gaffed mis-spotted die makes the mathematical part of the method more puzzling.    

In the routine I will add on, the spectator first rolls the die, adds the top and bottom numbers and counts to a card.  That card matches a prediction you have made.   You then offer to do a harder version of the prediction.  You place one of the cards aside, and have the spectator roll the die, add the top and bottom numbers and divide them in half.  "See.  I told you this was harder.  You have to do more math!"     When she announces her halved total ("3 1/2"), you show the card to be the 3-and-a-half of Clubs.    Because the first time she added the opposite sides, they were not seven, it re-inforces the randomness of the possibilities.

New old dealer inventory, unused and complete as issued 35+ years ago.