race features:
Cursed One's Fracture - You can cast Hellish Rebuke once every long rest
Due to living and training with cursed Asteres you get +2 Stealth +2 Survival
Forever Cursed
Cursed Asteres cannot pursue magic as they do not have a god to support it, they also have a particular curse picked by their previous god which will be different for each Cursed Astere.
Shadowed Reputation
Cursed Astere have been shunned by everyone and have to stay in hiding which is very difficult as their stars will have cracks formed in them to signify them going against their god, even kind hearted people can't help them or the gods will shun them too even if they aren't an Astere. This makes it impossible for Cursed Astere to live normally instead having to steal from others to survive.
Fractured Memories
Most Cursed Astere will have had their memories distorted by the gods to make them hate ones they used to love or make them feel incredibly lonely, barely able to recount their old life only able to think of the "hatred" they have for the people they once loved unknown to them when recounting it.