An invitation with gold lettering was sent to the Heavenly Palace's headquarters.
Everyone was shocked by this.
The invitation was actually from the fighters from the Blessed Enclave, inviting those from the Human Alliance to discuss matters that would've determined the fate of the world.
Everyone knew that the Heavenly Palace was the Human Alliance's strongest supporter. The Human Alliance would not be able to do much of anything without first getting approval from the Heavenly Palace.
It also meant that everyone knew that the Heavenly Palace needed to be taken out before they could gain control of the Human Alliance.
The advent of the most powerful beings from the Blessed Enclave came with the arrival of that invitation with gold lettering.