An Exchange of the Spirit OTK was an OTK strategy that involved quickly filling your Graveyard with cards before your opponent could fill theirs, followed by the activation of "Exchange of the Spirit" to switch both players' Decks with their Graveyards. Ideally, "Exchange of the Spirit" would be activated during the very first turn when your opponent had no cards in their Graveyard, causing them to immediately lose from a Deck out at the start of their turn (an FTK). There were many builds for this Deck, but the following list includes some of the more popular cards used: