Exodia Necross Secret Rare

This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by the effect of Contract with "Exodia". This card is not destroyed as a result of battle or by the effects of Spell or Trap Cards, and during each of your Standby Phases, increase the ATK of this card by 500 points. This card is destroyed when any of "Exodia the Forbidden One", "Right Arm of the Forbidden One", "Left Arm of the Forbidden One", "Right Leg of the Forbidden One", or "Left Leg of the Forbidden One" is not in your Graveyard.