Aura

Aura is the mystical, spiritual energy that suffuses all things in the world. In its original state, it is pure, but as it passes through something, it takes on aspects of that thing. Weavers can take in this aura to create essence which can manifest in different ways.
When drawing in aura to spin essence through their Soulthread and into their Spool, Weavers find it more efficient to do so with aura attuned to the same aspects as their Soulthread. Weavers, and some Awakened beings take in aura to replenish and expand their Soulthread.