History YMMV / TheMagicBookOfSpells

** Dirhhennia the Heaped was seemingly born with an AmbiguousDisorder that made her obsessed with balls, alongside chronic depression. Most of the people in her life, including her mother Festivia and her younger sister Crescenta, never really did anything to help her or try to understand her with the exception of her boyfriend Chad. Dirhhennia was later forced to abdicate the throne to Crescenta, who once turned her into a literal lone wolf because she got sick of Dirhhennia calling herself that.

* AuthorsSavingThrow: For some who felt the racial conflict between the Mewmans and monsters had gotten too {{Anvilicious}} for its own good feel this way about the more in-depth look at the CycleOfRevenge, showing the situation is far more morally grey than it originally seemed in the show.

* TheyWastedAPerfectlyGoodCharacter: Despite him mentioned in the Book of Spells, Toffee is only briefly mentioned within the books in both Comet and Moon's chapters while nothing about his potential backstory is heard. Though this case it may be justified as the book is more about the queens' point of view in each chapter.

** Rhina the Riddled was completely [[{{Asexuality}} asexual]], and had to cast a love spell on herself so she would be open to the idea of marrying someone. Unfortunately, her husband John Roachley turned out to be abusive and cruel. Rhina ended up becoming a SympatheticMurderer when an attempt to use a heartbreak spell went too far, making her husband die of ''literal'' heartbreak. Not only did that mess her up, it messed up her daughter as well when she was born.

* EnsembleDarkHorse: Despite being a fairly passive character in the book, Seth became rather popular among fans, who anticipated him as an EvilOverlord potentially even more dangerous and cunning than Toffee. It's not uncommon to find people who were disappointed that the final season never even mentioned him, and would have preferred him as the series' final villain over Mina Loveberry.

* FridgeBrilliance: Eclipsa's chapter in the book is forbidden, supposedly because of its dark magic. However, Star mentions that the spells are no big deal. Of course, they're no big deal - the chapter isn't forbidden because of the magic, but because anyone who read it would discover that [[spoiler: Eclipsa and Shastacan never had children, which means that Festivia wasn't Eclipsa's daughter.]]

* FridgeBrilliance: Eclipsa's chapter in the book is forbidden, supposedly because of its dark magic. However, Star mentions that the spells are no big deal. Of course they're no big deal - the chapter isn't forbidden because of the magic, but because anyone who read it would discover that [[spoiler: Eclipsa and Shastacan never had children, which means that Festivia wasn't Eclipsa's daughter.]]
* TheyWastedAPerfectlyGoodCharacter: Despite him mentioned in the Book of Spells, Toffee is only briefly mentioned within the books in both Comet and Moon's chapters while nothing about his potential backstory is heard. Though this case it may be [[JustifiedTrope justified]] as the book is more about the queens' point of view in each chapter.

** Celena [[ShrinkingViolet the Shy]] was born from a loveless, abusive marriage between the previous queen and her demon husband, and her mother's crime of accidental spousal murder caused her to grow up extremely shy. But because she was so beautiful, ''everyone'' in her court wanted to get close enough for her to spill, causing her to become reclusive as well.

* AuthorsSavingThrow: For some who felt the racial conflict between the Mewmans and monsters had gotten too {{Anvilicious}} for its own good feel this way about the more indepth look at the CycleOfRevenge, showing the situation is far more morally grey than it originally seemed in the show.
* {{Foreshadowing}}: Rhina's poem/riddle at the start of her chapter seems to directly foreshadow [[spoiler: Star abdicating the throne to Eclipsa at the end of Season 3 (effectively dismantling the Magical High Commission's puppet dynasty), and possibly Star destroying all magic in the universe in the GrandFinale]], as Star is the fifth [[spoiler: and ultimately final]] queen of Mewni after Rhina.
--> Seven came before Rhina/(if you subtract the boy)/Add four more reigns to her domain/And then what gets destroyed?

** Rhina the Riddled was completely [[{{Asexuality}} asexual]], and had to cast a love spell on herself so she would be open to the idea of marrying someone. Unfortunately, her husband John Roachley turned out to be abusive and cruel. Rhina ended up becoming a SympatheticMurder when an attempt to use a heartbreak spell went too far, making her husband die of ''literal'' heartbreak. Not only did that mess her up, it messed up her daughter as well when she was born.

* AuthorsSavingThrow: For some who felt the racial conflict between the Mewmans and monsters had gotten too {{Anvilicious}} for its own good feel this way about the more indepth look at the CycleOfRevenge, showing the situation is far more morally grey than it originally seemed in the show.

* AuthorsSavingThrow: For some who felt the racial conflict between the Mewmans and monsters had gotten too {{Anvilicious}} for its own good feel this way about the more indepth look at the CycleOfRevenge, showing the situation is far more morally grey than it originally seemed.