Some Origins

Amorphous:
As a being of pure energy, you do not have a solid form, and can freely change shape.

Fallen:
You have been exiled, and are now only a fraction of what you once were. You have half the vitality of a human being, are less satiated by food, and your movements are sluggish while grounded, but faster in air.

Guidance:
You are able to guide other creatures, increasing their natural vitality and life force, while lifting some of their pain onto yourself.

Intangible:
Due to your spectral form, you take less physical damage and more magic damage.

Martyrdom:
You are able to sacrifice part of your life energy to replenish the creature you are currently guiding.

Nyctophobic:

When in darkness, you quickly lose the energy that makes up your body, draining your life force in the process.

Photophillic:
When not directly under the sky, you are unable to naturally heal, however, when in full light and exposed to the sky, excess energy you gain is transformed into life force.