Quest for the Gravelord is a uncommon Enchantment card from Battlebond (BBD), collector number 156. Current market price: $0.23 (foil $0.56), 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.