The stock zone (ストック領域ゾーン Sutokku zōn) is the zone where cards are stored to pay for certain costs. Cards are put into the stock zone face down, and cannot be checked freely. During the draw phase of each turn, the current player draws two cards, then sends the next top card of the deck to the stock zone. Whenever a member on the field is attacked and loses the battle, it (and all cards in their soul, if any) are sent to the stock zone.