A possible plot could involve a long - forgotten blood feud being reignited when a powerful magical artifact related to one of the families is discovered. This could lead to a race between the two families to claim the artifact, with Harry and his friends getting caught in the middle trying to prevent chaos. For example, if the artifact has the power to either destroy or strengthen a family's magic, both sides would be desperate to get it.
It could involve Harry Potter taking a stand against a dark wizarding family that has wronged his loved ones. Maybe they've targeted his friends or family, and he decides that a blood feud is the only way to deal with their ongoing threats and attacks.
One idea could be that the vampires in True Blood are discovered by the wizarding world in Harry Potter. Wizards might be intrigued by the different nature of these vampires compared to their own magical creatures. For example, they could study how True Blood vampires react to magic spells.
Well, it could be about Harry trying to resolve a long - standing blood feud within the wizarding world. Maybe he discovers some dark secrets related to the feud that date back generations and uses his skills and influence to bring the feuding parties to the negotiating table.
Obviously, Harry Potter himself could be a central character. He might be drawn into the blood feud because of his reputation and his desire to maintain peace in the wizarding world. He could try to mediate between the feuding families.
Well, in some 'Harry Potter Dragon Blood Fanfiction', there might be the concept of dragon blood being used to heal dark magic wounds. Since dragon blood has strong magical properties in the Potterverse, it could be a rare and dangerous ingredient. Some fanfictions may also explore how a wizard or witch with dragon blood in their veins has an affinity for fire - based magic, much more so than others, and how they struggle to control this newfound power.
One interesting idea could be exploring how the presence of demon blood affects a character's magic. For example, it might enhance certain dark arts abilities. Another could be the social ostracism the character with demon blood faces within the wizarding world, similar to how half - bloods are sometimes treated in the original series. Also, it might show how the character struggles to control the more primal and dangerous instincts associated with demon blood.
Well, in such a fanfiction, it might be fascinating to see how the relationships with his original friends, like Ron and Hermione, are affected. Since his family situation has changed, perhaps their interactions become more complex. For example, they might have to deal with a new 'Harry' who has different priorities due to his new family.
It could be a long - lost relative of Voldemort. Maybe a distant cousin or something who has the same thirst for power and has decided to target Harry and his friends to gain more influence in the wizarding world.
One idea could be a story where the vampires in True Blood are exposed to the magic of the Harry Potter world. Maybe some of the True Blood vampires try to learn magic from Hogwarts students or teachers. Another idea is a plot where the werewolves in True Blood interact with the werewolves in Harry Potter, like Lupin meeting the True Blood werewolves and comparing their different experiences.
One interesting plot could be a feud over the inheritance of magical artifacts within the Potter family. Maybe there are long - lost family members who emerge, claiming rights to things like the Invisibility Cloak or the Marauder's Map.