While a "Gravekeeper's" monster(s) and "Necrovalley" are both on the field, monsters your opponent controls lose 500 ATK/DEF. Once per turn, during the Main Phase, if you control no card in your Field Zone: You can activate 1 "Necrovalley" directly from your hand or GY. If this card in your possession is destroyed by an opponent's effect and sent to your GY: You can Set 1 "Necrovalley" Spell/Trap directly from your Deck, except "Necrovalley Temple".
NM-Mint Unlimited - $0.50
Lightly Played Unlimited - $0.50
Moderately Played Unlimited - $0.50
Heavily Played Unlimited - $0.40
Damaged Unlimited - $0.40
NM-Mint Unlimited Non English - $0.50
Lightly Played Unlimited Non English - $0.50
Moderately Played Unlimited Non English - $0.50
Heavily Played Unlimited Non English - $0.40
Damaged Unlimited Non English - $0.40
NM-Mint 1st Edition - $0.30
Lightly Played 1st Edition - $0.30
Moderately Played 1st Edition - $0.30
Heavily Played 1st Edition - $0.30
Damaged 1st Edition - $0.20
NM-Mint 1st Edition Non English - $0.30
Lightly Played 1st Edition Non English - $0.30
Moderately Played 1st Edition Non English - $0.30
Heavily Played 1st Edition Non English - $0.30
Damaged 1st Edition Non English - $0.20