The auto xyz deck is a lesser and unofficial deck that allows the player to quickly xyz summon multiple xyz monsters at a time by swarming the field with monsters whose effects activate when other cards are summoned, or when sent to the graveyard. No specific cards are required, however, all xyz monsters must have the same rank and all monsters must heve the same level. An example of this deck's capability is by using cards such as Hammer Shark, due to it's effect, it becomes level three and you can special summon another level three monster, as long as it is water attribute, such as Friller Rabca. Because of this, you are able to xyz summon any rank three xyz monster that you choose. Then, when you detatch Friller Rabca, it's effect will activate allowing you to decrease a monster's atk by 500.