Perhaps it's a story where Harry Potter is transported to a desolate place and decides to make a city for the people there. He might use his knowledge of different magical creatures to populate the city with helpful beings like house - elves to do the chores and hippogriffs for transportation.
It could start with Harry Potter having a vision of a perfect city. He wakes up one day with this idea in his head and decides to set out on the journey of creating it. He starts by finding a suitable piece of land, perhaps an abandoned area that he can transform with magic.
Unsettling plot twists can contribute to a fanfic being a 'nightmare' type. For example, if it turns out that Dumbledore was actually an evil mastermind all along and has been manipulating Harry for his own dark purposes. Or if the prophecy was a lie and Harry's whole life has been a cruel joke. These kinds of revelations that shatter our perception of the original story can make a fanfic feel like a nightmare.
The worst Harry Potter fanfic might be the one that tries too hard to be edgy or different. It could introduce inappropriate or offensive elements that don't fit with the family - friendly nature of the Harry Potter series. Also, if it fails to capture the magic and wonder of the wizarding world, like having a dull and uninteresting description of Hogwarts or the magical creatures. If the author clearly doesn't understand the essence of the series and just uses the names to attract readers, it would be a candidate for the worst fanfic.
A clever Harry Potter fanfic often has unique plot twists. For example, it might change the way a well - known spell works or introduce a new magical creature in a way that makes sense within the existing wizarding world. This shows creativity and a deep understanding of the source material.
One thing that can make a Harry Potter fanfic cooler is an alternate universe setting. Imagine if the wizarding world was set in a steampunk style, with wizards using magic-infused steam-powered devices. Also, a fanfic that delves deeper into the backstories of minor characters and makes them central to the plot can be really cool.
One thing that can make a Harry Potter fanfic terrible is if it completely goes against the established lore of the series. For example, if it gives Harry a completely different backstory that doesn't fit with what we know from the books. Another aspect could be really bad writing, like having a lot of grammar and spelling mistakes that make it hard to read. Also, if the characters are really out of character. For instance, if Hermione suddenly acts like a silly, air - headed girl instead of the intelligent, strong - willed character she is in the original series.
A delicate Harry Potter fanfic often has detailed characterizations. For example, it might show the vulnerability of a character like Harry when he misses his parents. It also could be in the way it describes the relationships, like the complex friendship between Harry, Ron and Hermione. Delicate fanfics might use soft language to create an atmosphere, like when describing the warm light of the common room.
A 'sparkling' Harry Potter fanfic often has unique and creative elements. For example, it might introduce new magical creatures or spells that add a sense of wonder. It could also have really vivid descriptions of the magical world, like how the Hogwarts castle sparkles in the moonlight in a way we haven't seen in the original books.
A shittiest Harry Potter fanfic might have a plot that doesn't fit within the magical world's rules. For instance, if it has spells that don't follow the logic of magic in the Potterverse. It could also be that the fanfic is just a copy of other popular stories but with Harry Potter names slapped on. And if the author doesn't understand the themes of the original series, like love, friendship, and the fight against evil, and instead writes something that goes against those themes, it can be considered really bad.