The final stage has been set, the true powers have been unleashed.
The entire world of Tunga is currently empty of any living being as if they have predicted the two beasts' coming. The entire land was as big as the entire United States combined into a wide hollow land.
The current most powerful Dragon in all mortal realms is currently faced to face with the Emperor in his peak form.
As a being who originally has no form, the Emperor could only copy the beings as much as he liked and at his peak form, he could even copy everyone's ability.
Elric is the strongest creature the Emperor has ever faced since he started to gain sentience. And thus, it is only right for him to copy Elric's current form and power.