Tyki suspects that the fungus is spreading amongst the Orcs through the stagnant, contaminated water they all drink. He thinks that adding clean, fresh water to their supply may help to cure them.
'I rather wonder if the foul, rank, stagnant water that those Orcs drink might have something to do with their horrid condition. Perhaps introducing some fresh water into their supply will help to keep the fungal infection from spreading any further.
'Take this water-skin and fill it with fresh water. Add that to the Orcs' stagnant spring, and I feel confident we could see some significant results!
'The only place you will find fresh water around here is within the small cave nearby. Once you've filled your water-skin, take it and empty it into the Orcs' spring at Dalgum-ru to the south.'
Fresh water may be obtained in the small cave within the Shadowed Refuge. The Globsnaga Orcs' stagnant spring may be found at Dalgum-ru, south of the Shadowed Refuge.
Tyki wants you to add clean water to the Globsnaga Orcs' foetid water in an effort to cure them of their fungal infection.
The Globsnaga Orcs' stagnant spring is at Dalgum-ru, south of the Shadowed Refuge.
Bring the water-skin of fresh water to the Orcs' water supply.
Tyki is at the Shadowed Refuge, north of Dalgum-ru.
You should return to Tyki and report back with the results of his freshwater cure.