Activate only if both a "Gravekeeper's" monster and "Necrovalley" are on the field. Neither player can Special Summon monsters, except "Gravekeeper's" monsters. If either a "Gravekeeper's" monster or "Necrovalley" is not on the field, destroy this card.
![Hidden Temples of Necrovalley [MP14-EN230] Rare | Exor Games Bridgewater](http://exor-games-bridgewater.myshopify.com/cdn/shop/products/92779_200w.jpg?v=1609926971)
