{{Redirect|Deck|the type of set|Starter Deck|and|Structure Deck|a list of Deck sets|Template:Decks}}[[File:Main_DeckMain Deck.png|thumb|A Main Deck in the anime.]]A Duelist's The '''Main Deck''' is (Japanese: メインのデッキ ''Mein no Dekki''), usually simply referred to as the pile of cards that is placed on '''Deck''' (デッキ{{NoteTag|Sometimes written as "山札" in the [[Deck Zone]]anime and manga. The Main Deck }} ''Dekki''), is, essentially, all the cards the Duelist will be playing with in a Duel. This Deck contains all pile of the cards (that a [[Trap Card|Trap]], [[Spell Card|Spell]] and [[Monster Card|Monster]]) that the Duelist may use, excluding [[Fusion Monster|Fusion]], can [[Synchro MonsterDraw a card|Synchrodraw]], and [[Xyz Monster|Xyz]] monsters, which are kept in a seperate "[[Extra Deck]]"from during play.KUDMost card effects that allow you search your Deck and select one Each Duelist uses his or more card(s) normally include [[shuffle|shuffling]] your her own Main Deck, this is to maintain fair playin a Duel.

To be legalWhen constructing a Deck, [[Monster Card|Monster]], [[Spell Card|Spell]], and [[Trap Card]]s are placed in the Main Deck must be between 40 to 60 cards with most decks containing approximately 40 cards. Most experienced Duelists will argue that you should stick to the minimum because it increases the chances of you drawing your best card(s). Another point of view is that a large Deck[[Fusion Monster|Fusion]], [[Synchro Monster|Synchro]], [[Xyz Monster|Xyz]], with cards that allow you to search out ones you need ("and [[TerraformingLink Monster]]" or "s are placed in the [[Dark Magic CurtainExtra Deck]]") may also work well. If a deck focuses on one strategy, such as a player uses official [[Burn DeckMonster Token]], and holds no real critical cards, then a lot of cards may be helpful for more 'ammo'. Certain cards like "[[Mystic TomatoCounter]]" , or "[[Gold SarcophagusField Center Card|Field Center]]" are also more useful in a larger Deckcards, these must be stored separately as well.

The When a [[Extra Duel]] begins, the Main Deckis placed [[face-down]] and in the [[Side DeckZone]] each have an upward limit of 15 the [[field]]. All cardsin the Main Deck must remain face-down during the Duel (unless a card [[effect]] like "[[Convulsion of Nature]]" says otherwise). During a Duel, but neither counts towards player may view the contents of either player's Deck unless a card effect allows them to, after which the count Deck must be [[shuffle]]d. Even if a card in the Deck is [[face-up]], it cannot be [[look]]ed at by either player unless it is on top of the Main Deck, in which case it is [[public knowledge]].

Rulings from == Construction restrictions ===== ''TCG''/''OCG'' ===* The Main Deck must contain only [[Legal]] cards.** [[Extra Deck]] cards cannot be placed in the Main Deck.** [[Monster Token|Token]], [[Counter]], and [[Field Center Card|Field Center]] cards are not placed in any Deck. ==== Master Duel ========= Constructed Deck format =====* The Main Deck must contain 40 to 60 cards.* Up to three copies of any [[Unlimited]] card can be included across the player's Main Deck, [[Side Deck]], and [[Extra Deck]] (combined).** Up to 1 of each [[Limited]] card and up to 2 of each [[Semi-Limited]] card may be included in the player's Decks. [[Forbidden]] and [[Illegal]] cards cannot be included.** Cards that are [[Permanently treated as alternate name|permanently treated as having a different name]] are considered to be the same as that card for deck construction. Cards that are [[Treated as multiple names|permanently treated as having multiple names]] are counted as all of those names. ===== [[Sealed Format]] =====* The Deck must be constructed using only card product provided at the event.* The Main Deck can have a minimum of 20 cards. There is no maximum size.* There is no limit on the number of cards with the same name that can be included in the player's Decks. ==== [[Speed Duel]] ====* The Deck may only contain cards with the [[KonamiSpeed Duel Logo]] regarding .* Up to three copies of any [[Unlimited]] non-Skill Card can be included across the player's Main Deck , [[Side Deck]], and [[Extra Deck]] (combined). Additionally, the player can includeup to one Skill Card with their Deck (although Skill Cards are not placed in a Deck).** Up to one [[Limited 1]] card (in total), two [[Limited 2]] cards (in total), and three [[Limited 3]] cards (in total) can be included in the player's Decklist, including their Skill Card.* The Main Deck must contain 20 to 30 cards.** Even in Speed Duel Sealed Format, the Main Deck must still contain 20 to 30 cards.<ref>[https://img.yugioh-card.com/en/downloads/penalty_guide/Speed_Duel_Addendum_1.2_KDE-US.pdf Official KDE-US Yu-Gi-Oh! TRADING CARD GAME Tournament Policy Speed Duel Addendum] (March 11, 2022):IV. Sealed Deck Information</ref> === [[Yu-Gi-Oh! Rush Duel]] ===*No The Main Deck must contain only ''Yu-Gi-Oh! Rush Duel'' cards can .** [[Fusion Monster]]s cannot be placed below in the line Main Deck.* The Main Deck must contain 40 to 60 cards.* A Duelist may not have more than three copies of your any [[Unlimited]] card included in their Main Deck, [[Side Deck]], and [[Extra Deck]] combined.** If a [[Forbidden]], [[Limited]], or [[Semi-Limited]] List is used, the number of copies must not exceed those requirements.*You cannot turn it sidewaysThe Main Deck and Extra Deck combined can contain a maximum of 1 Legend Card of each card type ([[Monster Card|Monster]], [[Spell Card|Spell]], and [[Trap Card|Trap]]).<ref name="YGOrg 10-31-22">{{cite web | url = https://ygorganization.com/rush-duel-change-to-how-legends-work/ | title = <nowiki>[RUSH DUEL] Change To How Legends Work</nowiki> | author = NeoArkadia | website = The Organization | date = October 31, 2022 | accessdate = October 31, 2022}}</ref> == In other languages =={{In other languages| fr_name = Main Deck| de_name = Main Deck| it_name = Main Deck| pt_name = Deck Principal| es_name = Deck Principal| ja_name = メインのデッキ| ja_romaji = Mein no Dekki| ko_name = 메인 덱| ko_rr = Mein Dek| tc_name = 牌組| tc_pinyin = Páizǔ|sc_name=主牌组|sc_pinyin=Zhǔpáizǔ}} == Notes =={{NoteFoot}} == References ==<references />