Svengali Deck ( poker )

 

A machine-made deck that contains marked cards, shaved cards, cards made up of pieces of other cards for certain effects, etc. Such decks are sold at magic supply outlets, supposedly for entertainment, and are indeed used by magicians to perform tricks, but they are also used by thieves to introduce into card games. Svengali was a character in George Du Maurier's 1894 novel Trilby, an evil hypnotist who enslaved the title character, a young woman.