A large, red figure stands in the center of the Eternals, and a golden light floats toward a motionless Ajak.
And that was the instruction from the prime Celestial Arishem.
Specifically, it appears the main threat will be Kro, a Deviant general whose genetic makeup actually did grant him near-immortality, linking him to his archnemeses in a way he has to keep secret from his own kind.