As part of their Three Labours, the Oracle's Chosen were tasked with drinking from the Horn of Balmytria in order to receive visions of the future.
However, when they reached the Dragon Shrine in Estoria where the Horn had previously been kept for a number of centuries, they discovered it had been stolen.
Following the trail of the artefact out of the city, they were led to the Mossy Temple in the Oldwoods. Here, they found that it had been taken by servants of Demetria.
After defeating the nymph, they were able to retrieve the Horn and bring it back to Estoria. Once there, the heroes drunk from the horn and received a vision: of the Ultros, and a horde of undead sailors.