The Dragon king wanted to know who made those one thousand suns land on the Crucible.
He wanted to know that because it shared the same fire that God Rameses shared when he had burned the dragon king.
So if someone used the same fire then it meant that someone related to that God was present in the Crucible and the Dragon King would like to ask some questions from that person. Some peaceful questions.
But alas, no one answered the Dragon King. No one took Pablo's name as it was Pablo who used all those Suns.
With no answer, El'Dorado became enraged and a prideful Being like him, would only do one thing in anger.
Kill.
Therefore, he opened his mouth and those black flames made their appearance again.
But before they could burn Pablo and everyone else standing around him, a heavy voice echoed:
"You are one stupid dragon, you know that?"
There was only one person with such a voice and it was equally destructive as the Dragon King.
It was Dravakos. The one and only Demon King.