Chalice of Eternity

The Chalice of Eternity is used in the Waterfall Quest. To reach it, you need to put 6 Air runes, Water runes, and Earth runes. Then, place the Glarial's amulet on the statue of Glarial, which is next to the statue of Baxtorian, her husband. After the hill is raised, use the Glarial's urn on the Chalice and you can finish the quest!