Eidolon

"An Eidolon is an idea, formed from an ancient time and distant concepts. The scholars say that they exist all around us, invisible and untouchable. They also say that we can create our own, through something as simple as voicing an idea."

Ward Instructor

Eidolons are thought to be the spirits of the Ascendant, who lend their power to those in the world or latch onto ideas, giving them mystical powers or compelling people to follow them. Three groups have worked out how to use this power for their own ends.
Wards in the Paradigm Technocracy are a secret spy force that use Eidolons to influence the emotions of others. They have the most direct control over Eidolons and are most aware of their power and consequences of using them.
Biographers are the mystics of The Drowned Land. They passively and unconciously use Eidolons to empower stories about the dead to bring them back to life.
The Madcapped have the least control over Eidolons. They passively gain the attention of them by doing great deeds and gaining names or crafting wondrous items. They then will the Eidolons to help them perform more deeds, allowing them to do superhuman feats.
Eidolons can also act on there own if a idea or cause gets enough following. They can empower places, causes or individuals. When a Ward, Biographer or Madcapped overuses their power, it allows the Eidolons to act more freely, leading them to empower ideas and causes with less support. The Wards call these empowered concepts "Overts" and see them as a threat since they can change the world and they drain their power while active.