Avatar: The Last Airbender2005

Prince Zuko:
I need to ask you something. What do you remember about our Great-Grandfather's history?

Azula:
Ah, Zuko. It's so strange how your mind works.Fire Lord Sozin began the war, of course. He spent his early years secretly preparing for it, but he was as patient as he was clever. He famously waited for the comet, later renamed Sozin's comet, and used its power to launch his full-scale invasion of the world.