Yugioh Single
Necrovalley (SBC2-ENF14) - Speed Duel: Battle City Finals 1st Edition
$1.00
null / Field Spell
SPELL
All "Gravekeeper's" monsters gain 500 ATK/DEF. Cards in the GY cannot be banished. Negate any card effect that would move a card in the GY to a different place. Negate any card effect that changes Types or Attributes in the GY.