User Score: 0
It is revealed that Harmonic Convergence turned numerous non-benders from around the world into Airbenders, including Bumi.
The scene of Korra meditating and seeing herself as a cosmic projection in space is similar to the scene in Avatar: The Last Airbender's "The Guru", where Aang tries to master the Avatar State.
Korra defeats Unalaq and Vaatu, causing Vaatu to disappear for 10,000 years and thus causing Unalaq's death.
Korra decides to leave the spirit portals open, thus allowing humans and spirits to live together once again.
Korra and Raava combine their souls together again, restoring the Avatar Cycle. However, because of the events of the previous episode, Korra has lost all connections to the past Avatars.
Jinora's soul is rescued from the Spirit World.
Unalaq and Vaatu's souls combine to form a "Dark Avatar". According to the credits, this combination is call "Unavaatu".
Raava is separated from Korra and defeated by Unalaq/Vaatu, thus ending the Avatar Cycle.
Admiral Zhao, who was last seen in Avatar: The Last Airbender's "The Siege of the North (2)" is revealed to still be alive, but forever trapped in the Spirit World's fog of lost souls.
Vaatu is released from his prison in the spirit world.
Korra reveals that she has not regained all her memories after being attacked by the dark spirit at the end of "Peacekeepers".
Mako is promoted to a detective on the Republic City police force.
The teapot that Iroh uses in this episode is the same one that Wan uses to carry Raava around in in "Beginnings (2)".
Professor Zei's skeletal remains are seen in Wan Shi Tong's library.
Mako and Asami resume their romantic relationship.
Some of the sites that Korra and Tenzin meditate at in order to enter the Spirit World are the same sites that Avatar Aang and Guru Pathik meditated at during Aang's Avatar State training in the original series episode The Guru.
The sky bison that Korra uses at the end of the episode has part of its right horn missing, similar to Appa's mother.
This episode reveals the origin of the Avatar cycle. Not only does the Avatar cycle go by the seasons, it also goes by the order that Wan obtained the four elements (Fire, Air, Water, Earth). The Avatar spirit itself was created when Raava and Wan permanently join their spirits together. Thus, Raava is the reason why the spirit of the Avatar continues to reincarnate.
Avatar Yangchen in the only named Avatar that does appear in this episode.
Wan is seen learning the Dancing Dragon that Aang and Zuko also learned in the original series.