Quest for the Gravelord is a uncommon Enchantment card from Duel Decks: Nissa vs. Ob Nixilis (DDR), collector number 58. Current market price: $0.12, TCGplayer market prices via Scryfall.
Whenever a creature dies, you may put a quest counter on this enchantment. Remove three quest counters from this enchantment and sacrifice it: Create a 5/5 black Zombie Giant creature token.