Unnatural Army

One thing to note about the limit on worlds is that it only affects a person's cultivation. This means that if an immortal descends to a medium world, only their cultivation will be suppressed to the Core Formation stage.

Of course, since they need their cultivation base to release their immortal aura, being suppressed won't stop them from unleashing a much more powerful presence than a normal Core Formation stage expert could release.

This was why, when Aetheris, the second strongest in the Eternal Wrath Legion, appeared, the aura he released was that of a Spirit King at the peak.

But that wasn't all; when the king and his people laid their eyes on him, they felt a fear that only comes from being under the aura of someone several times stronger than themselves.

And that was possible because Aetheris is an Immortal King suppressed by the dungeon to the Peak of the Sovereign stage.