Lurantis GX (138/149) [Sun & Moon: Base Set] 097 while both have "Gravekeeper's" monster

while both have "Gravekeeper's" monster and "Necrovalley" are on the field: Negate the activation

You can only activate 1 "Duelist Alliance" per turn

Set: Destiny Soldiers Card type: Effect Monster Rarity: Secret Rare Attack: 1600 Defense: 1400 When this card declares an attack: You can target 1 face-up Spell Card your opponent controls

Set: Legendary Collection 5D's Card type: Normal Trap Rarity: Common Attack: 0 Defense: 0 When a Plant-Type monster you control destroys an opponent's monster by battle and sends it to the Graveyard

Lurantis GX (138/149) [Sun & Moon: Base Set] 097 while both have "Gravekeeper's" monsterSet: Sun & Moon: Base Set Type: Grass Rarity: Ultra Rare Retreat cost: Colorless,Colorless