A Lost Witch
is a crossover between The Owl House and Warhammer 40,000. In this story Luz is a psyker, and when Imperial forces come after the girl her powers go haywire and send her to the Boiling Isles.
- Adaptational Badass: Luz in this story is a psyker, giving her more inherent power than she was ever able to access in canon. Later, she shows the ability to cast glyphs by simply thinking of the symbol without needing to draw it out.
- Age Lift: Luz was fourteen when she came to the Isles in canon, here she's described as being in her late teens.
- Armor-Piercing Question: When Amity asks why Willow is defending Luz in "House Hunting", Willow retorts that it's because she always sticks by her friends, and asks Amity if she can say the same. Amity can only reply with a "Whatever".
- Blessed with Suck: Luz is a psyker... in the Imperium, meaning that she lives in constant fear that someone will find out about her power and drag her to one of the Black ships.
- Demon Possession: In Chapter 8 Krlizzerk, a Tzeentch daemon sealed in the library's Forbidden Stacks escapes and tries to possess Luz so it can use the psyker's body in order to wreak havoc in the Materium.
- In Spite of a Nail: Despite Luz not being present in the Isles for a few more years than in canon, Willow still managed to get herself transferred to the Plant magic track
- Immune to Fate: Luz has so many possible paths that even Renegal, a powerful Oracle witch, cannot clearly determine her future.
- When Krlizzerk is about to kill possess Luz, the Titan apparently intervenes to show her the Ice glyph, which actually allows her to harm the horror, baffling the Tzeentch daemon because it never saw that in the futures it divined of using Luz's body to triumph in the Materium, implying that it cannot sense the Titan or whatever force is responsible for giving her the glyphs.
- Instant Runes: With her psyker powers, Luz is able to cast glyphs simply by making them appear in front of her rather than having to draw them out.
- Place of Power: Despite her psyker abilities seemingly being a different kind of magic than what the Boiling Isles witches use, it's implied that just being in the Demon Realm significantly increases the strength of her powers.
- Point of Divergence:
- Eda doesn't have a portal door.
- Willow has switched to the Plant Track some time before meeting Luz.
- Luz, Gus, and Willow fight the Demon Hunters outside Blight Manor, and said hunters are left at the mercy of the manor's security.
- Sealed Evil in a Can: a Tzeentch daemon is trapped deep in the Forbidden Stacks of the library, and tricks/enthralls Luz into freeing it in Chapter 8/
- Tempting Fate: After their group's failed Conjuring in "House Hunting", and Amity having to deal with the Demon Hunters crashing into the fence around Blight Manor, Amity mentally wonders if things can get any worse. Then they find the images of Hooty being animated by Gus, Willow, and Luz.
- Trapped in Another World: Somehow Luz got yanked through the Warp to the Boiling Isles by her psyker powers after her friends were killed, and she has no idea how to get back.
- Wham Episode: Chapter 8 has Luz find and nearly get possessed by a demon called Krlizzerk, "The Grand Librarian" and a Herald of Tzeentch that was trapped deep in the Forbidden Stacks, and defeat said daemon with the Ice glyph, with Hunter later finding what was left.
- Wrong Context Magic: It's implied that Luz's psyker abilities are something entirely different than the magic native to the Isles.
