Soporte Necrovalley y Gravekeeper (Legacy of the Valiant)

Necrovalley’s Altar
Continuous Spell
You can only activate this card while there is a “Gravekeeper” monster and a “Necrovalley” on the field. While this card is on the field; both players cannot Special Summon monsters, except “Gravekeeper” monsters. If there isn’t a “Gravekeeper” monster and a “Necrovalley” on the field, Necrovalley’s Altar is destroyed.
Necrovalley’s Tomb
Counter Trap
You can only activate this card while there is a “Gravekeeper” monster and a “Necrovalley” on the field. When your opponent activates a Spell/Trap Card, or monster effect: Negate the activation, and if you do, destroy that card. Only 1 “NEcrovalley’s Tomb” can be activated per turn.
Gravekeeper’s Prayer Teacher
Dark/Spellcaster/6/1500/1500
This card’s defense is increased by 200 ATK point according to the number of “Gravekeeper” monsters in your graveyard. While this card is face-up on the field; monsters that activate their effects in the graveyard, except “Gravekeeper” monsters, have their effects negated. While Necrovalley is on the field, the opponent cannot activate field spell cards and field spell cards cannot be destroyed by the opponent’s card effects.
Gravekeeper’s Apostle
Dark/Spellcaster/3/1000/1000
When this card is destroyed by battle and sent to the Graveyard: You can Special Summon 1 “Gravekeeper” monster, excepto “Gravekeeper’s Apostle” from your Deck in face-down defense Position.
Gravekeeper’s Ambush Troop
Dark/Spellcaster/4/1700/0
When this card is flipped face-up: target1 card from the opponent’s grave; return it to the bottom of the deck. When this flipped card is sent to grave; target 1 “Necrovalley” card from your graveyard and add it to hand. This effect cannot be negated by “Necrovalley”