The Ethereal Numerator is a Dream World ethereal that plays a small role in the Lunar Diplomacy quest.
The Ethereal Numerator directs one of the tasks the player must complete in the dream section of the quest. In "Communicating in numbers," the Numerator tells the player a sequence of numbers. The player must then look for the pattern in the sequence, and then select the two digits that would come next in the pattern.
The update history project is a work-in-progress – not all updates to this topic may be covered below. See here for how to help out!