Exodia Necross Ultra Rare

This card can only be Special Summoned by the effect of "Contract with Exodia". This card is not destroyed as a result of battle at any time or by the effects of Spell or Trap Cards. During each of your Standby Phases, increase the ATK of this card by 500 points. This card is destroyed when you do not have all 5 of these cards in your Graveyard: "Exodia the Forbidden One", "Right Arm of the Forbidden One", "Left Arm of the Forbidden One", "Right Leg of the Forbidden One", "Left Leg of the Forbidden One".