After Aang sabotages the drill from the inside, he fights Azula atop the great machine, using a combination of earth, air, and water to hold off Azula's repeated fire attacks. Aang's clever and ...

They would use bone trigrams and begin to narrow down ... from Wan with Vaatu to Aang with Fire Lord Ozai. Since the Avatar's sole duty is to the world, they would have to maintain neutrality ...