End of the Road
According to the record of the True Martial World, an Eighth Revolution Elemental Rage Tribulation was the highest to ever appear in recorded history. There were speculations that a Ninth Revolution existed, but none were certain about this.
It could be said that because of his existence alone, Starlight had swayed the Fate of the Seventh Heaven practically single-handedly.
Although it was very difficult to survive such a Tribulation, when one was successful, they became wrapped up in the favor of the Heavens.
The amount of investment the Heavens needed to give to an existence that entered the Lord Realm was so great that the Heavens obviously wouldn't like such a person to die. As such, such geniuses were incredibly difficult to kill for reasons that extended beyond just their trump cards…
The Heavens themselves didn't necessarily want them to die.