Capítulo 1502: Submit Or Die.

The worst scenario they have prepared for is an all-out battle with the dragon race and the dragon spirit. Things haven't gone worse than that so they are right on track.

Soverick has even confirmed that many powerful dragons have returned to the realm, and they all have one target. That target is clear to them after Soverick saw all of them entrenched around the ancestral grounds of the dragons. 

As for the matter of the dragons breaking rules to keep him, it is something that they suspect is likely to happen. Origin gods are not encouraged to enter the realm or use their domain. But it is highly likely that the dragons will break some rules during the fight that is about to ensue so that Origin gods can use their full power in the realm. Legion is also prepared to do that if it happens. So they are as prepared as they can be.