The Avatar State is a special form designed to make Avatar stronger by granting them the power of every previous Avatar. The Avatar State is a powerful mechanism made by nature spirits. When you die while being in the Avatar State, the cycle will be broken and the Avatar will cease to exist.
But when the war comes, the Avatar State is not enough.
- told by Roku in Avatar State.
Since Fire Lord Sozin, every Fire Lord will be cursed to rule the world... And to be bad. Even Zuko, the World Changer Fire Lord, has plans to destroy the world.
But will the plans be the same after the comeback of Storm Kingdom? Will the new-old kingdom destroy the Fire Nation or vice versa? Or will some other nation be destroyed?
But one thing is obvious. The world is in danger again. And the danger has a name. Azulion.