Lakyus was going to escape while the whole building was crumbling and distorting under the effect of heavy Gravity.
So Immortal did what he was best at, which was adapt.
Knowing he can't move freely from the area due to the gravity well which Lakyus left in the room, He ripped off his own head and then threw it outside of the effective radius of this spell. And then regrew his new body.
But this was not time to rest, because even a second delay would cause him a loss. "Leaf, do it."
At those words, the ground below Lakyus and Alfin broke open, as giant vines crawled out of them and attacked the two.
While Leaf prevented the two from leaving, Immortal took a giant breath and the air from the surroundings flew into his pores, getting entrapped into his muscles, while he grew in size and mass.
This was the burst. Knowing the opponent was the real body instead of a fake one, it would be foolish to hold back.
