First Clear the Ashes, Then Fight: The Titans' Lives in the New Era

Hutton led his people all the way into the upper levels of Nathraxas Castle, only to find that the demons there had already been cleared out by the Night Warrior.

The fact that demons no longer left physical remains after death because Illidan had shattered the Fel Heart was indeed rather difficult to get used to. The Lightforged on the battlefield felt as if they were fighting a group of "ghosts that didn't exist."

Especially when demons collapsed where they stood after being cut down—it gave everything an unreal feeling.

It did not look particularly intimidating, and without severed limbs and mangled corpses littering the ground, it was difficult to convey the brutality and madness of war.

Yet the terrified shrieks that came from the depths of the demons' hearts as they died proved that this "exit state" was far more lethal to them. Without "swift resurrection," they would have to endure far longer in the Twisting Nether before they could possibly return to the material world.

It was as though the "concealment" and "repulsion" of the material cosmos against force creatures had begun working again.

The "wall" between the Twisting Nether and the material starsea, which had previously done nothing to stop demons, had been rebuilt. Once Annihilator Argus was purified as well, then even if the Dark Titan came in person, He would be utterly unable to find a second vessel for "swift resurrection" besides Himself.

This was the supreme manifestation of fel power. It was not a concept of power that just any stray cat or dog could bear. It was only after the demons occupied Argus that the once-insignificant Burning Legion truly unleashed the disaster known as the Burning Crusade.

The shattering of the Fel Heart had essentially inflicted an undispellable debuff upon the Burning Legion: