The Koran Deck, a renowned mentalism and card magic instrument, is famously linked to the 1-0-1 or Five-Star forcing system, popularised by the legendary Al Koran. This deck enables magicians to discreetly force one of a select few cards, typically four, while dealing or displaying the pack face-up. Thanks to its design, with indifferent cards interspersed among duplicates, the deck appears completely normal to spectators. Crafted by hand using standard Bicycle cards, it includes basic instructions but no routines.