Ethereal Essence is a scarce crafting material that is dropped from Aura Nodes when they are destroyed, and from certain monsters (Wisp, Eldritch Guardian) when they are killed. Each essence has a characteristic aspect, and contains 2 points apiece of that aspect, and another 2 points of Auram. Ethereal essence is is the only source of Auram (mana beans excepted). Sometimes Eldritch Guardians will drop an "untyped" essence, with only Auram; it is unclear if this is intentional.