The Eternal Relics

See The Endless and The Eternal Relics

Ancient objects of immense power that are spread across the cosmos. Whoever controls them has the core power of the universe itself.
The Carnax are scouring worlds in search of them to fulfill a prophecy of universal domination, and will stop at nothing to secure them. They are already in possession of two while humanity unknowingly controls one. A Relic is discovered to be buried under the Earth, bringing the Carnax to the Sol system.