My informant spoke to me about rituals and practices of Magic the Gathering.  Of the most ritual acts of Magic is the shuffling ritual.  Since shuffling must always take place before a game, and since it involves the player’s deck, often something very personal to them, shuffling is very ritualistic.  While each player does it slightly differently, they almost always do it the same way and sometimes doing it differently gives you a bad feeling about the game.

The way my informant prefers to shuffle is with two runs of the 5-Pile shuffle, followed by riffle shuffling.  5-Pile shuffling is where you take the deck in one hand, or half the deck if it’s too big to hold, and you place cards from the top into five piles as though you were dealing out hands of poker.  You continue to place the cards into these piles until you have placed all the cards, then you pick them up and put them back into one big pile.  According to my informant, one of his friends told him this was the optimal way to shuffle the deck for good randomization.

I am also a Magic the Gathering player and I also employ the 7-pile shuffle method.  After each pile has been dealt, I will stack the 7 piles into two piles, then riffle shuffle those together before starting more riffle shuffle.  I learned the 7-pile shuffle method from a friend who simply said it was a good way to shuffle.  It’s also a good way to make sure you have the right number of cards in the deck, since you know which pile the last card should end up in if you did it right.  I also like the 7-pile shuffle method because when you start a game of Magic, each player draws 7 cards, so 7 piles for 7 cards lines up nicely.

Attached to the submission are two photos.  One photo is a demonstration of 5-pile shuffling and the other is a demonstration of 7-pile shuffling.