When a Spell Card, Trap Card, or monster effect is activated, while both have "Gravekeeper's" monster and "Necrovalley" are on the field: Negate the activation, and if you do, destroy it. You can only activate 1 "Imperial Tombs of Necrovalley" per turn.
![Imperial Tombs of Necrovalley [OP09-EN024] Common](http://paradoxtcg.com/cdn/shop/products/3f259229-de10-5451-9a54-d4f3b5fdf36a.jpg?v=1698820918&width=1445)
