In the upcoming battle against the demons, the night elves need the help of slumbering druids.In this mission Tyradne must pass trough the orcs and reach the horn to awaken the Arch-Druid, before the Scourge reach him. To do so, a base need to be constructed. The army limit of night elves is increased with Moon Wells. And Moon Wells can heal the nearby units as long as there is magic water in them. Moon wells are excellent advancing point buildings, and the wisp is not consumed when constructing them.