Extra Deck

Extra Deck
Japanese	エクストラデッキ (formerly 融（ゆう）合（ごう）デッキ)
English	Extra Deck (formerly Fusion Deck)
Other names French: Extra Deck (formerly Fusion Deck) German: Extradeck (formerly Fusionsdeck) Italian: Extra Deck (formerly Fusion Deck) Korean: 엑스트라 덱 (formerly 융합 덱) Portuguese: Deck Adicional (formerly Deck de Fusão) Spanish: Deck Extra (formerly Deck de Fusión)

The Extra Deck (エクストラデッキ, Ekusutoradekki; Chinese: 特別牌組 Tèbié Páizǔ "Particular Deck"), previously referred to as Fusion Deck (融（ゆう）合（ごう）デッキ Yūgō Dekki), is a Deck where Fusion Monsters, Synchro Monsters, and Xyz Monsters, as well as Pendulum Monsters that would have been otherwise sent from the field to the Graveyard, are stored during a Duel. They are separate from the Main Deck (minus Pendulum Monsters), and you can search through it to find a Fusion Monster, Synchro Monster, or Xyz Monster that you need. There is a 15-card limit to the Extra Deck, regardless of how many Fusion Monsters, Synchro Monsters, or Xyz Monsters you include. Pendulum Monsters placed on top of the Extra Deck by the game mechanics are not counted for the 15-card limit. The "Maximum of 3 Rule" for cards of the same name still applies.

If a Fusion Monster, Synchro Monster, or Xyz Monster that is on the field, in the Graveyard, or banished is returned to its owner's hand or Deck, it is instead sent to the Extra Deck, since Fusion Monsters, Synchro Monsters, and Xyz Monsters cannot exist in either the hand or the Main Deck.

The contents of your Extra Deck are not public knowledge to your opponent, and only you may look through its contents. During a Duel, the Extra Deck is placed face-down in the Extra Deck Zone.

Any card or card effects that still refer to the Fusion Deck now apply to the Extra Deck.

Limits on the amount of cards that are stored in the Extra Deck in the anime and manga are not yet determined.

• It is also not clear at all times of the series if the Extra Deck exists in those Duels (such as early games shown just fuse monsters, without ever apparently pulling the Fusion Monster card from anywhere).