Merlin had already abandoned his original body. His core was the Illusory World. As long as it was not destroyed, he would never die. The previous Merlin merely hid the Illusory World within his body, preventing the power of the natural order from discovering it because at that point, the Illusory World was rather weak, unable to directly confront the Void Zone.
However, the Illusory World was perfected now, at a high level of accomplishment. It could function in a stable manner, having its own natural order. Therefore, it could directly withstand the power of the Void Zone. Merlin's body was destroyed but his Mind Power fashioned a new one. That was the Illusory World being displayed, confronting the Void Zone.
"Rumble."
The origin of the natural order rebelled completely. The power of the natural order, thick as an arm, crashed down furiously, its target being Merlin who was below that dusky light.
