The vestige of a Celestial is very expensive to make. It is also easily destroyed. It is like an expensive consumable but it has the advantage of being concealed and controllable from a distance. The tree father didn't need to worry about the expensive cost of divinity since the gods were generous with divinity when they exchanged it for their demigods. So the vestige was a good idea to stay in touch with the GodSlayer without being close to it.
The tree father chose this plan of action because Legion believed that if he can find out about the GodSlayer from some random demigod that he kidnapped, the odds are that others have found out about it and it is not a secret. He could have destroyed it but the weapon was developed to harm the Celestial Supreme so the tree father decided to render assistance if it is used against Zernon or destroy it if it is ever used against Legion.
Unlike what Zernon thinks, the GodSlayer is not being used against Legion. Zernon has made himself vulnerable on purpose by entering the machine and targeting Aeternus. So the tree father thought he should get some help for his foolishness. That is why the vestige of the tree father is amplifying the attack.
All of these started a while back and yet a hidden god that even legion doesn't know about says that he thought of this plan and he knew that the tree father would be here. If it is true, then this Celestial is highly likely to wield the power of fate. It also means that Legion's plan might not end the way it thought it would. There is an unknown entity they didn't account for. Unfortunately, nothing can be done about it now. The die has been cast.
'Too bad that Soverick hasn't become a titan of law yet.' The tree father muttered to himself after accepting the situation.
Back To Demon King Aeternus.
Numerous red shadowy figures like wraiths or ghosts were moving around him in a haphazard manner. They started to pop like bubbles when he sensed the incoming danger. He stopped practicing and became serious. If he had hair in his body, it would rise right now and become stiff. He would have goosebumps if he also had skin because of the sensation of danger that washed over him.
"It is time." His voice was calm but heavy just like the heaviness that is suddenly weighing on him.
He knew when the weapon was loaded through the tree father. He knew it was aimed at him through the tree father and he can confirm it to be aimed at him through the force that has locked onto him. He knew when the weapon was fired at him through the tree father, the force that locked on him, and the Intuition of danger. He knows all of these and yet he felt fear. They say that the fear of the unknown is the greatest fear. They were wrong.
Anyone of the sources of information he has would have been enough to inform him of how much danger he is in. Just his intuition will do or the amount of power that the tree father can sense, or the tangible force that suddenly fell on him as he was locked. All three made sure to drive home how much danger he is in and help him determine how seriously he should take this attack.
His golden eye sockets looked up at the sky as he muttered. "This could actually kill me."
The incoming attack is a type of attack that cannot be messed with. The scale of the danger is massive and beyond the scale of their plan. A lot of energy empowered with 5 Authorities is coming at him. If it clashes with his soul then his soul will crumble and he will die. He will die because he doesn't have a resurrection point. He hasn't created a plane in the abyss yet, a death will mean no coming back for him.
Of course, it is not the attack that will kill him. The attack will certainly injure him but his eternal soul will remain. It will just render his soul too weak to withstand Chaos energy anymore. The rebellious energy will run amok and ravage his soul once it is weak enough. It is like an opportunistic killer, just waiting for the right time to rear its corrosive head. Chaos energy is something that even his eternal soul cannot survive much less in a weakened unprotected state.
Chaos energy might have been docile but that's only because the power rating of his spirit has always been higher than that of Chaos power. The incoming attack will put him back in the situation he was in as a mid-rank demon when he amplified his soul injury by using power beyond him after numerous high-rank demons tried to kill him. He can handle an Origin god's domain now but it will be useless against what's coming for him.
And yet he smiled. "Now we've got you where we want you. It's good enough for now. We'll deal with the anomaly after."
He is locked on. It's like a string has been attached to him pulling the attack toward him. The sky changed colors immediately after the weapon was fired. All the colors of the world were washed away leaving the world in white and black. Only green, orange, and golden colors were allowed to remain in the world. It is evident that the Celestial Supreme is wielding the full power of his Authority and everything not aligned with his will is being washed out and overridden.
Aeternus's eye sockets blazed as he brandished his claymore against the onslaught of power that is rolling toward him like a tsunami. His figure blazed with a black all consuming flame in resistance to the ban of the Celestial Supreme's will. He is a demon with Authority so he doesn't need to listen to a Celestial even if that Celestial is the Supreme.
He began pumping energy into his claymore in preparation for his reply. The gods have gone to such an extent just to eliminate him. It is only appropriate that he gives them a worthy reply. Above all else, he is a polite demon king. Polite, not petty.