You can only control 1 face-up "Gravekeeper's Chief". Your Graveyard is unaffected by "Necrovalley". When this card is Tribute Summoned: You can target 1 "Gravekeeper's" monster in your Graveyard; Special Summon that target.
NM-Mint Unlimited - $1.00
Lightly Played Unlimited - $0.90
Moderately Played Unlimited - $0.80
Heavily Played Unlimited - $0.70
Damaged Unlimited - $0.50
NM-Mint 1st Edition - $1.10
Lightly Played 1st Edition - $1.00
Moderately Played 1st Edition - $0.90
Heavily Played 1st Edition - $0.80
Damaged 1st Edition - $0.60
NM-Mint Unlimited Non English - $1.00
Lightly Played Unlimited Non English - $0.90
Moderately Played Unlimited Non English - $0.80
Heavily Played Unlimited Non English - $0.70
Damaged Unlimited Non English - $0.50
NM-Mint 1st Edition Non English - $1.10
Lightly Played 1st Edition Non English - $1.00
Moderately Played 1st Edition Non English - $0.90
Heavily Played 1st Edition Non English - $0.80
Damaged 1st Edition Non English - $0.60