Rilohn Refuge (mission)/Zaishen Quest

Summary

 * Destroy the Drought
 * *BONUS* Defeat the Drought without shutting down the water pumps
 * *BONUS* Complete the mission in Hard Mode.

Dialogue
A demon inside Mahnkelon Waterworks is poised to corrupt the river Elon and poison thousands of citizens. Anyone who can deal with a demon should contact the Master of Whispers and travel to the Rilohn Refuge in Kourna.
 * Accept: I can do that!
 * Reject: No, I'm way too busy today.