Phoenix Deck - S.U.M.
Deck of cards by Roy Johnson - $29.95
S.U.M. has nothing to do with math, the initials stand for Set Up Marked. It is the stacked, marked deck that needs no calculation or memorization whatsoever because the deck does all the work. You don't have to decipher esoteric markings or remember formulae, everything is literally spelled out for you.
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