by Luthair » Mon Mar 03, 2008 2:22 pm
Essences (you mean for armour right?) drop from elder wyverns which I believe use super-invis. Augs seemed to be a random drop from prismatic mobs, at least thats where I saw one /shrug
Ideally you would setup at a squire and pull the area for a chance at both their loot and at essences.