Necrovalley

Field Spell Card

All "Gravekeeper's" monsters gain 500 ATK and DEF. Cards in the Graveyard cannot be banished. Negate any card effect that would move a card in the Graveyard to a different place. Negate any card effect that changes Types or Attributes in the Graveyard.

Rulings – Yugipedia

Printings:

Pharaonic Guardian: PGD-084 (Super Rare) - 2003-07-18
Dark Revelation Volume 1: DR1-EN032 (Super Rare) - 2005-03-19
Duelist League Series 3 participation card: DL3-001 (Rare) - 2006-04-28
Champion Pack: Game Three: CP03-EN020 (Common) - 2007-05-15
Retro Pack 2: RP02-EN079 (Rare) - 2009-07-28
Turbo Pack: Booster Two: TU02-EN014 (Common) - 2010-01-09
Structure Deck: Marik (TCG): SDMA-EN025 (Common) - 2010-10-15
Legendary Collection 3: Yugi's World Mega Pack: LCYW-EN194 (Ultra Rare) - 2012-09-29
Legendary Collection 4: Joey's World Mega Pack: LCJW-EN260 (Common) - 2013-10-11
Astral Pack Four: AP04-EN003 (Ultimate Rare) - 2014-02-07
Duelist Saga: DUSA-EN050 (Ultra Rare) - 2017-03-30
Magnificent Mavens: MAMA-EN109 (Ultra Rare (Pharaoh's Rare)) - 2022-11-03
Quarter Century Stampede: RA04-EN122 (Platinum Secret Rare) - 2025-04-10
Quarter Century Stampede: RA04-EN122 (Quarter Century Secret Rare) - 2025-04-10

Prices:

Cardmarket: 1.72 €
TCGplayer: $ 0.58