Proposal
- The armies travel with amazing speed from place to place on the planet. Same is true for how they were able to travel.
- This means that they have fusion power or maybe a quantam power system.
This would have to be kept a secret or be difficult to reproduce to keep the natives from becoming a power before they are properly vetted.
It may be that this power source
1. interacts with the wraiths - eventually
or
2. the wraiths interact / are attracted or repelled by it.
(hints of angelmass? )
3. the energy that is used is so common to the colonists that they accidentally give it to the natives.
As to the energy mystery of the planet?
- If the planet started pretty barren, how were the natives able to survive and thrive so quickly?
- If the colonists are unaware of the wrtaihts for a beat - this can be a reveal later on