Underhiver/chaos saint/chaos cult

You are one of millions lost in the underhive. A world under a world in the great industrial cities of a hive city. Hive cities are places where a world is plundered for all its worth and then turned into one giant factory, and now you are just one of the many forgotten cogs in the machine.

Chaos saint—a chaos saint is a human linked to chaos—a strange thing to be for many search for chaos; some are sought by few and are ever bound with it at birth, but that is what it means to be a chaos saint—to be with chaos to be known by it and to be loved by it—a strange thing whether a curse or blessing is determined usually by time more than anything else.

Cultism: Instead of using a big miracle to wipe away the world in a big show of their gods power, they instead built up their more than a thousand followers. Increase their ranks one by one until they take the world, but unlike many other worlds taken by chaos, those taken by saints can make sure it still delivers its tax just to a different lord.