Perhaps a character from Harry Potter, say, Voldemort, could be reimagined in the world of Game of Thrones. He might be a powerful sorcerer in the Seven Kingdoms, seeking to conquer not just Hogwarts but also the Iron Throne. His dark magic could be used to subdue the various houses and factions, much like he did with the Death Eaters.
Another cool crossover could be the dragons in Game of Thrones having some sort of connection to the magical creatures in Harry Potter. Perhaps they share a common ancestor in some ancient magical being. And the dragon riders could have a special bond similar to the bond between a wizard and their familiar.
The crossover where Hogwarts is transplanted into Westeros is quite interesting. The students of Hogwarts have to deal with the chaos and power plays around them. It's fascinating to see how the magical rules of Harry Potter work within the setting of Game of Thrones.
A really interesting crossover is when the magic of Harry Potter is used to solve the problems in the political chaos of Game of Thrones. For example, in some fanfics, characters use spells to prevent the spread of the White Walker threat.
One interesting crossover could be a scenario where the magic from Harry Potter is introduced into the world of Game of Thrones. For example, wizards and witches could be inserted into the different kingdoms of Westeros. They might use their magic to influence the power struggles, like using spells to protect a certain lord or to expose the secrets of another. Another idea could be characters from Game of Thrones traveling to Hogwarts. Imagine Jon Snow learning about magic and how it could be used to fight the White Walkers.
One interesting crossover could be a scenario where the dragons from Game of Thrones meet the magical creatures in Harry Potter. For example, Drogon could fly over Hogwarts, causing quite a stir among the students and teachers. Another could be characters like Jon Snow and Harry Potter teaming up. Jon's skills in combat and leadership combined with Harry's magic would make for an exciting adventure.
One possible crossover could be a story where the magic from Harry Potter is introduced into the political intrigue of Game of Thrones, with characters vying for lordship in a world filled with both wizards and non - magical beings. For example, imagine a character like Tyrion Lannister learning magic from Hogwarts and using it to his advantage in the power struggles of Westeros.
One interesting crossover could be a scenario where the powerful vampires from The Originals find themselves in the political intrigue of Westeros from Game of Thrones. Maybe they get involved in the power struggles between the different houses, using their vampiric abilities to gain an edge. For example, Klaus Mikaelson could try to manipulate Cersei Lannister for his own ends.
A really cool fanfiction idea could be that the ancient prophecies in both Eragon and Game of Thrones are somehow related. Characters from both stories start to realize that their fates are intertwined due to these prophecies. This could lead to a grand adventure where they have to work together to fulfill or prevent the prophecies from coming true. For instance, Daenerys Targaryen and Eragon could join forces, with their dragons, to face a great evil that has been foretold in both of their worlds' prophecies.
A great crossover idea in the fanfiction could be the magic systems. Imagine Daenerys Targaryen learning about the Signs that Geralt uses. Her dragons could be intrigued by the magic of The Witcher world, and perhaps they could interact in ways that are both unexpected and exciting. This could lead to new alliances or battles depending on how the story unfolds.
One interesting crossover could be the use of Aquaman's underwater kingdom's politics and apply it to the power struggles in Game of Thrones. For example, the complex hierarchies and rivalries among different underwater tribes in Aquaman's world might mirror the Houses vying for the Iron Throne. Another could be a character from Game of Thrones finding themselves in Aquaman's world and having to adapt to the underwater environment and its rules.