Davis recalled their encounter in the Elemental Dimension.
While being hunted by the Blood Realm Calamity, he helped Lady Thunderwraith obtain the Peak-Level Exalt Grade resource, a Black Abyss Lake Ghostpearl that contains the ghostly essence required for her entry into the Divine Exalt Stage. With this, she would indeed be able to unlock the second level of her Godskull.
Master Deathseeker's previous incarnation also told him about Ghost Faith.
