The individual Rex had spoken of was Neptulon the Tidehunter, the water elemental among the four great elements.
He was one of the four great elements of Azeroth, a pillar of the world itself.
Rex did not dare kill Neptulon the Tidehunter. Although the four great elements of Azeroth could revive after death, the world would suffer a shortage of elemental power during the time they remained dead.
He was the embodiment of Azeroth's water element, representing all its elemental water. He could be sealed away or killed, but he must never be exiled to the Twisting Nether and removed from Azeroth entirely.
That was why the Titans had chosen to seal Neptulon the Tidehunter in the Elemental World. Azeroth could not afford to lose any of its four great elements. Without them, the entire world would fall a tier. A world that could once accommodate demigods would no longer be able to support even them, with Heroic Powerhouses becoming its upper limit. That was no good sign. It would mean Azeroth had regressed rather than advanced. Thus, to house the Four Elemental Lords, the Titans had deliberately created a small companion world beside Azeroth: the Elemental World.
The Elemental World depended on Azeroth for its existence. Without the Elemental World, Azeroth could continue to exist, but the reverse was not true. If Azeroth were lost, the Elemental World would inevitably be destroyed.
Although Neptulon the Tidehunter was the embodiment of Azeroth's water element and Rex could not simply banish him, who had decreed that the water element had to be Neptulon the Tidehunter?
Those two statements sounded utterly contradictory, but a closer examination revealed no contradiction at all. Neptulon the Tidehunter embodied the water element, an indispensable part of Azeroth, but his consciousness was another matter entirely. As long