Nightmare Fuel / The Angel of The Owl House

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• When Luz gets thrown into the Detention Pit, it absorbs her angelic magic and goes on a rampage.
• After Luz is captured by the Emperor's Coven, she wakes up to find that she's been branded with a sigil against her will. That's horrifying enough, but Luz escapes the sigil by taking advantage of angelic healing abilities and slicing her arm off with a stray spell of Raine's.
• Belos injects Luz with Titan Bile, forcing her into a mix of an angel and her canonical Titan form, but she's mindless and feral, attacking everything, Belos using a sigil to restrain her before she tears him to shreds. He then tries to use this form to make Luz slay Eda before she becomes lucid again.
• For some reason, Luz's magic was actually nonexistent before bonding with the light glyph, Camila having to give her an angelic blessing monthly to keep her alive. If Luz hadn't bonded with the glyph, with Camila unwittingly blessing Vee in disguise, Luz would have likely died not too long after coming to the Isles.
• Once, when she was a kid, Viney was bullied for her Cait Sith heritage and the bullies threatened to cut off her tail.
• The island that the rebels decide to use as a base is formed from a Titan arm that was severed relatively recently, with no sign of who or what caused it, or the rest of the Titan in question.
• It's driven in once more just how terrifying the Abomatons are, and the rebels quickly prioritize finding a way to stop their sale.
• Lilith turns into the Raven Beast on Earth, and promptly goes flying into Gravesfield.
• The Goliath Ash Moth, full stop. A giant Bug demon, apparently the apex of the category to the point that they could hunt dragons for food, one resides on one of the Titan's palms, where it's created a volcano to nest in. It and its spawn are the main threat in "Saving Palismen", nearly killing Luz and company multiple times.
• Chapter 28 deals with Terra, so it's naturally full of this.
  • Terra's reign of terror over the Plant Coven has scared all but the most desperate or deranged recruits away, causing them to join other covens aligned with the Plant Coven, like the Gardening Coven, just so they won't have to be under her thumb, and it's hard to blame them.
  • For those that do join the Coven, they're all made to live under her roof in the Coven's base so she can better control them. Those who aren't magically powerful but physically strong have wooden masks without eyes but with flower carvings put on and are made scouts, vines reaching into their brains and turning them into Terra's utter puppets, which she refers to as making them smarter. Those who aren't as strong are made to be either butlers or maids on a whim and assigned tree or flower-based names, respectively, once such maid, a male witch, desperately warning Willow to go away. Above those are Terra's elites.
  • Terra incapacitates Raine, Willow, and Eda by using spores from a fungus that grows near Latissa that were on them, even making them grow in their throats.
  • Hanu is one of Terra's elites and basically her adopted daughter. That doesn't save her from nearly getting fed to the Bat Beast by Terra for her sadistic amusement, simply because she failed to stop Willow and made a mess in the foyer, binding Hanu's hands before telling her that she might forgive her if she beats the Bat Beast, clearly not expecting her to survive.
  • At the end, the Mandragora Arboriel shows up and makes a deal with Terra to get revenge on their mutual enemies, and make Terra and her Coven members Mandragoras themselves.
• Luna was the head of the Potions Coven but when on an expedition with Belos and the old Beast Keeping Coven head to a Dragon Graveyard Island to search for Galdorstones, only for a dragon that wasn't fully dead to attack. Belos was able to bring it down, but then killed the remaining half of the expedition team himself to cover up their sighting of his monstrous form, and after Luna escaped because she was an Aquatic Demon that could swim away he framed her for the deaths, and forced her husband and son to fake their deaths so he wouldn't kill or petrify them in order to keep his dark secret.
• When Luna is de-petrified, she reveals that she was aware the entire time, or at least conscious, and initially thinks that she's hallucinating when freed.
• Vitimir turns out to have known Cassiel when she was at Hexside, and is completely obsessed with her even decades after she left the Isles. He even goes so far as to try and make Luz drink a potion that would not only rewrite her paternal DNA so he'd be her biological father, but rewrite her memories so she believes that it has always been that way, essentially murdering her and putting someone else in her body, and is so insane that he thinks that Cassiel will be fine with that after they reunite post-Day of Unity.
• If you use healing magic on the Common Mold it adapts, and can become potentially lethal.
• Bill of the Titan Trappers has two blades gifted to him by the Grand Huntsman. The first gives the user vitality and lifespan from creatures killed using it, allowing Bill to be over 5000 years old. The second prevents healing magic from working on any wounds inflicted by it if even a tiny shard of the blade is left in the wound. And Bill uses the latter on Luz even after she saves his life.
• Hettie Cutburn is the Sole Survivor of her town after a necromancer created some flawed Grimwalkers and they went on a rampage.
• According to what Osran divined, if Adrian had taken the Emerald Entrails to be brainwashed like he planned, they would have had their personalities erased and then died due to Belos trying to force information out of them and breaking the oath they swore to the CATTs.
• To heal Dell's hands, they need to be cut off so Luz can regenerate them from scratch due to the scars. Luckily, Eda brought along a pain suppression potion, but still.
• Cassiopeia's heart turns out to have been blasted into space as the Wailing Star, turned to crystal by the last curse of the Archivists, trapping her soul inside. And since the Archivists somehow got ahold of Angel magic to bypass the Titan immunity to their natural magic, this act of spite is at least part of why Angels were so feared and hated in the Isles pre-Belos.
• Once Luz frees Cassiopeia's spirit, the curse the Titan placed on the Archivists breaks, and they turn their attention back to the Demon Realm...
• Odalia fuses three Oracle spirits together into a fearsome abomination, and not the goop kind, something no sane Oracle would do. And then she loses control of it, and it nearly goes on a rampage in the nearby town. Luckily Amity is able to stop it and free the souls inside from their agony, though Odalia's idiotic attempts to regain control over it don't help.
• In this AU, the Draining Spell won't just kill the people of the Isles, but the magic will be sent to an Angel Vessel, who will absorb it and then release it in a Fantastic Nuke that will wipe the entire planet clean.
• The bullying situation is bad at Glandus, especially for members of the tracks that are looked down upon like Illusions and Bards, to the point that kids are regularly thrown into the trash or trapped on the roof just for starters. Even the stronger students who don't target the weaker students mainly fight it by becoming Bully Hunter types instead.
• Belos turns out to have been experimenting with petrification after Luz reversed Eda's, hoping to petrify her and lock her away until the Day of Unity.
• The Ultimate Sanction of the Divine Realm turns out to be Reformation, which is called out as effectively extreme brainwashing and an execution in all but name, only worse, since the individual in question doesn't even get the comfort of being able to reunite with their loved ones in the afterlife. And the Divine Realm wants to do this to Luz because by freeing Rasiel she broke a treaty that almost no one even knew existed.
• Luz's Lotus-Eater Machine shows the Boiling Isles and Gravesfield devastated by a war between Belos, the Divider, the Angels, the Collector, and the inhabitants of the Isles, with everyone who's not dead (from either the Draining Spell or Angelic weapons) either a damaged puppet or an insane victim of the Divider. And that's before Belos possess Luz and infects her mind and body with his presence.

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