Gravekeeper's Vassal is a Spellcaster Effect Monster with Attribute DARK, Level 3, ATK 700, DEF 500.
Monster cards contest the field through Summons, battles, and effects—check Level/Rank/Link and Attribute for Extra Deck or searchers.
On the current TCG and OCG Forbidden & Limited lists tracked here, Gravekeeper's Vassal is Unlimited.
YGOPRODeck lists Gravekeeper's Vassal for these formats: GOAT, OCG GOAT, Speed Duel, Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
Gravekeeper's Vassal belongs to the Gravekeeper's archetype—use that tag when searching for engine pieces and tech options.
A listed print of Gravekeeper's Vassal appears in Dark Revelation Volume 1 (DR1-EN011) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Gravekeeper's Vassal is about $0.14 on TCGPlayer (prices change frequently).
