When the planets fractured and were tossed to the eldritch sea, the planet’s energy gathered forming a crystallized pure energy that is bound to the land producing a domain repelling the Eldritch Sea, allowing small pieces of land to survive, the crystal is bound to the land and if separated the energy disperses and the crystal shatters.
Once someone touched the pure energy of the planet and got connected to a network of planets that were also shattered, they were revealed a way to survive and extend the planet’s energy.
The way was to put the energy in a more efficient machine that could hold the energy and transfer the residue energy from the clashing with the Eldritch Sea into a core.
Source beacons can use the clashing energy mixing 4 different kinds of Remembrance to keep the beacon running.
A beacon that is not fed Remembrance loses energy slowly and becomes smaller until there is no remaining space that the Eldritch Sea cannot access.