This is the final half hour-long episode in the series.
Production on this episode was finished on April 12, 2019.
This episode is the only one to feature a shortened version of the opening theme song.
This is the second and final episode after "Fairycrushed" to not feature the ending theme.
Cosmo is both the first and last character to speak in this series.
Although marginally, Timmy, Chloe, Janna, Mr. Pants, Brandon, Cosmo, and Wanda are last characters to be seen in the series.
Revelations and continuity
Chloe wields the Royal Magic Wand for the second time after "Deep Dive".
Chloe is the last person to ever wield the magic wand.
Glossaryck's supply of pudding keeps Timmy, Chloe, Janna, Mr. Pants, Brandon, Cosmo, and Wanda's memories from being affected by the Realm of Magic.
The Firstborn is revealed to have been killed by the purple unicorn, reduced to a talking skull.
Tam is revealed to have been trapped in the Realm of Magic since "Mama Timmy".
The words of the Whispering Spell are revealed: "Break the bond, tear the fabric, cleave the stone, stop the magic."
The black marks on Eclipsa's arms are healed.
Eclipsa transforms into her mewberty form for the first and only time.
Mina Loveberry is defeated.
This was also the second and final time Mina was arrested after "Certifiable Super Sitter".
Timmy's cheek marks appear again after "Booth Buddies".
Magic is destroyed, bringing the Age of Magic to an end. As a result:
The fairies (inculding Anti-Fairies and Pixies) no longer have wands, wings, or crowns.
Mina loses her Solarian powers.
The Solarian Army is destroyed.
Those that were wounded by Solarian magic are healed.
Glossaryck and the Magic High Commission are erased from existence.
Timmy and all of his friends are returned to their respective homes and native planets.
Timmy's side of the portal that cleaves all of the planets in the galaxy together is shown to be located outside the Stop & Slurp, where he and Chloe first became friends in "The Big Fairy Share Scare".
All of the planets in the galaxy are merged into one.
The title of the episode partly calls back to Glossaryck's line in "Wishology!" ("You can cleave something apart, or you can cleave something together") and refers to the all of the planets being "cleaved" into a single planet.
Timmy, Chloe, Janna, Mr. Pants, Brandon, Cosmo, and Wanda's greeting at the end may be a reference to "Fairy Idol", where Timmy exchanged a similar greeting after Cosmo and Wanda are revealed to be alive.
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