All "Gravekeeper's" monsters gain 500 ATK and DEF. Cards in either player's Graveyard cannot be banished. Negate any card effect that would move a card in the Graveyard, other than itself, to a different place.
I hope u guys can provide the Necrovalley Card soon because i really love gravekeepers Card, please help me to fulfill my quest so i can keep playing this awesome game you guys have made..thank yiu very much..
Field Spells that involve 500 atk boost:
Umiiruka (500 atk boost Water)
Luminous Spark (500 atk boost Light)
Gaia Power (500 atk boost Earth)
Archfiend Palabyrinth (500 atk boost Fiend)
Molten Destruction (500 atk boost Fire)
Rising Air Current (500 atk boost Wind)
Dunno if they'll release some of this cards together with Necrovalley.
The way I see it, they will release this card together with other Field Spells like A Legendary Ocean and Amazoness Village. Of course, they'll be placed in UR gem.