grail

noun 0.775

holy water

noun 0.553

golden goose

noun 0.552

needle in a haystack

noun 0.549

fountain of youth

noun 0.533

ne plus ultra

noun 0.530

holy fire

noun 0.529

crock of gold

noun 0.522

holy cross

noun 0.517

treasure trove

noun 0.515

saving grace

noun 0.515

treasure

noun 0.515

quintessence

noun 0.511

holy war

noun 0.508

nirvana

noun 0.506

godhead

noun 0.502

gold

noun 0.501

masterpiece

noun 0.501