Obsidian Totems are used with a Crystal Core in the construction of Mystical Constructs that can move aura nodes.
There are cases where one can find the totems on hills and in a circular pattern with obsidian tile used as sporadic flooring. The totem circle yields 3-4 obsidian per totem and some upon the flooring. In the center of the circle is a chest that yields Dungeon loot. Under the obsidian tile it sits upon lies a wisp spawner.
The wisp spawner spawns standard wisps that have no additional Aspect.