The eternal dragon is a bronze dragon. In Blizzard's official novel Twilight of the Dragon King, Nozdom, the bronze dragon king, told Sal that after Titan gave him the ability to master time, he was too curious and broke himself down into countless scales and scattered them on different timelines, so that he could control time as a whole.

But it will go wrong after a long time ~

Nozzie Dom is confused because there are too many doppelgangers. He doesn't know which one is his real body. So some "Nozidom doppelgangers" in the timeline thought they were their real bodies, so they began to modify the time and became eternal dragons.

In the novel, every time Sal travels through time, the eternal dragon comes after him, so Sal is particularly depressed. When he asked Nozdom, Nozdom said quietly, keep the change. These eternal dragons are "me" on another timeline. Sal was depressed.

In addition, as for the purpose of the eternal dragon, this is a bit complicated. I wonder if the landlord can understand it.

I'm here to divide Nozdom into two people to explain.

Nozi Dom A helps other dragons and players fight the wings of death. After the death wing is destroyed, it is found that the world without the death wing will be even crazier (the world without the death wing will be swallowed up by the ancient gods bit by bit, which is equivalent to the death of that year, so it is better to let the death wing have a good time, which is the plot of 4.3), so Noz Dom A becomes Noz Dom B, and goes back to the past time to help the death wing and stop Noz. So Nozdom has been in this infinite loop and can't jump out. And after Nozdom B was finally killed in 4.3, he would say the famous saying "live in the moment"

This passage is difficult to understand, but it will be easy for the landlord to understand if he has seen the classic American movie "Cruise of Terror".