(1) If there is a “Gravekeeper’s” monster or “Necrovalley” on the field, all monsters your opponent controls lose 500 ATK/DEF.
(2) During either player’s Main Phase, if you do not control a card in your Field Zone: You can activate 1 “Necrovalley” from your hand or Graveyard.
(3) If this card is destroyed by your opponent’s card effect and sent to the GY: You can Set 1 “Necrovalley” Spell/Trap from your Deck, except “Necrovalley”.