The Deck refers to the deck of cards that a Yu-Gi-Oh! player draws a card from every turn during a duel. The deck is placed face down in the Deck Zone, where many card effects can add or remove cards from it. If a player can not draw from the deck during his/her Draw Phase, the player automatically loses the duel. There are spell and trap cards that can effect how many cards are drawn each turn, or even effect if cards can be drawn at all!