Resource

Mortus Horn

The horn of the Mortus Lungfish is ground down into a powder and used by the Ostrons in herbal remedies. Source: Cut from Mortus Lungfish via Fisher Hai-Luk in Cetus (Earth). Catch Mortus Lungfish in Plains of Eidolon ponds at any time of day. Also drops from Thumpers in the Plains of Eidolon.