There is a fanfiction where the Deathly Hallows from Harry Potter have some sort of connection to the powerful artifacts in the Shadowhunter world. The story follows the characters as they try to figure out this connection and how it could change the balance of power in both worlds. It's full of mystery and adventure. Also, there are fanfictions that focus on the love stories that could happen if characters from both series meet, like a Shadowhunter falling for a wizard or witch.
A great fanfiction is one where the Shadowhunters are invited to Hogwarts to teach a special class on combat using their unique weapons. It shows how the Hogwarts students react to their new teachers and their different style of magic. Another one could be about a Shadowhunter who is a secret Potterhead and has to hide his love for the Harry Potter books in the Shadowhunter society.
One fanfiction I remember has the characters from both series facing a threat that can only be defeated by combining the magic of the Shadowhunters and the spells of Harry Potter. It's really interesting to see how the two different magical systems interact. There are also some humorous fanfictions, like when the Weasley twins try to prank the Shadowhunters but end up getting pranked themselves because they underestimated the Shadowhunters' skills.
There are some fanfics that focus on a character from Harry Potter having a connection to a Shadowhunters' artifact. For example, Hermione might discover a hidden Shadowhunters' rune that has some sort of power related to magic in the wizarding world. This could lead to an interesting adventure where she has to team up with some Shadowhunters to figure out its purpose.
One great malec shadowhunters fanfiction is 'The Lost Art of Breathing'. It delves deep into Alec and Magnus' relationship, exploring their insecurities and how they grow together. Another one is 'A World of Our Own' which has a really interesting take on their adventures in the shadowhunter world and how they deal with the challenges that come their way.
There's a Shadowhunters crossover fanfiction that combines elements from 'Harry Potter'. In this story, the magic systems collide in a really cool way. The Shadowhunters' runes and the Hogwarts magic are contrasted and sometimes combined. It has a really engaging plot that keeps you reading to see how the two very different worlds will co - exist.
There's 'Clace: A New Beginning'. It takes place after the main events in the series and shows Clace starting a new chapter in their lives. It has a really interesting plot that keeps you hooked. And 'Clace in Paris' is also a fun read, where they go on an adventure in Paris and face some unique threats there.
There's also 'Naruto in the Shadow World'. In this fanfic, Naruto is mistaken for a new type of Shadowhunter due to his chakra abilities. The author does an amazing job of integrating the two universes. Naruto teams up with some Shadowhunters to fight a common enemy that is causing chaos in both the ninja world and the shadowhunter realm.
Sure. 'Magnus and the Lost Artifact' is an interesting fanfiction. In this story, Magnus embarks on a quest to find a powerful and ancient artifact. Along the way, he has to deal with various Shadowhunters, some of whom are suspicious of him and others who become his allies. Then there's 'Magnus' Secret Alliance'. This one reveals a secret alliance that Magnus has formed with a group of Downworlders to protect their rights against the over - reaching Shadowhunters. And don't forget 'Magnus' Heartbreak', which is a more emotional piece that focuses on a time when Magnus had his heart broken and how he coped with it within the context of the Shadowhunters universe.
One great 'Shadowhunters Glee fanfiction' is 'The Musical Shadowhunters' on FanFiction.net. It combines the musical elements of Glee with the shadowy world of Shadowhunters in a really fun way.
One interesting crossover could be the use of magic systems. For example, how would the Shadowhunter runes interact with Harry Potter's spells? Maybe a character from the Shadowhunter world could find themselves at Hogwarts and be both amazed and confused by the different forms of magic. Another aspect could be the characters' personalities clashing or working together. A brave Gryffindor and a fearless Shadowhunter might team up to fight a common evil that threatens both their worlds.
One really good 'Shadowhunters vampire Simon fanfiction' that I've come across is one that delves deep into Simon's internal conflict. He's a vampire, but he still has his human side and the values he held as a human. This story shows how he tries to balance his new vampiric nature with his old self. It also has some great interactions with the other Shadowhunters characters, like Clary. The author does a wonderful job of portraying Simon's complex emotions and the challenges he faces in this new life.
There's a fanfic called 'Time Warp in the Shadow World'. In this story, a new Shadowhunter discovers a magical artifact that sends them on a time - traveling adventure. They meet past versions of their friends and enemies, which leads to some really cool interactions and revelations about the Shadowhunter lore. It's full of action and mystery.