Elegy Tacet Core Development Materials The Mourning Aix's drop, a Resonator's Ascension item.

The Tacet Core of Mourning Aix, singing a never-ending elegy. Those who touch the Tacet Core will be overwhelmed by a great sense of loneliness and loss and will unconsciously shed tears. But this is not empathy, perhaps just a kind of emotional hypersensitivity.
Sources