“The Trojan Deck” is simultaneously simple in premise and almost limitless in possibilities. At its core, it is the holy grail of card tricks: they shuffle a blue deck and you shuffle a red deck. Both decks match exactly.
There is no deck switch, the effect has no sleight-of-hand whatsoever, it is 100% foolproof, and the gimmick can be used in all sorts of ways to allow you perform stacked deck effects with a shuffled deck. But that isn’t even the best part.