Deck

The Deck is a pile of cards located directly below the Graveyard and to the right of the Spell & Trap Card Zones. The Deck must contain between 40 and 80 cards (this does not include the Side Deck or the Extra Deck), and can contain any combination of Monster Cards, Spell Cards, and Trap Cards. When a card is drawn by a player, the top card of the Deck is moved to the players hand. When a card effect allows a player to search the Deck, the Deck is shuffled automatically. If at any point, a player is required to draw and is unable to due to no cards being left in the Deck, that player instantly loses the duel.