One common theme could be the exploration of the consequences of using such dark magic in the wizarding world. It might show how Harry's character changes, perhaps becoming more isolated as other characters fear his newfound power.
In the original series, Harry uses magic that is generally within the bounds of what is considered acceptable in the wizarding world. But in this fanfiction, the use of demonic magic is a huge departure. It changes the whole moral landscape of the story.
Yes, there might be some out there. However, the concept of Harry using black magic goes against the general moral compass of the original series. Some fanfictions might explore this in an interesting way to show a darker, alternative universe where he's forced to use it for some extreme reasons, like saving his friends from an even greater evil. But it's important to note that this is a deviation from J.K. Rowling's original vision.
There are several fanfictions on this topic. In some, Harry uses summoning magic to bring back lost loved ones in a spiritual form to gain advice. For example, in 'Harry's Summoning Quest', he summons the spirits of his parents and Sirius to understand how to defeat Voldemort once and for all. This use of summoning magic adds an emotional depth to the story.
Harry Potter is still likely to be one of the main characters since it's in the title. However, other characters like Hermione and Ron may have different roles or personalities. There could also be new characters introduced that play significant parts, perhaps a mysterious wizard from a far - off land who has a different understanding of magic.
One possible consequence could be his expulsion from Hogwarts. Using black magic is strictly prohibited in the wizarding world, and the school has a zero - tolerance policy. Another consequence might be the loss of his friends. His friends, who uphold the values of good magic, might not be able to accept his use of black magic.
Well, first of all, the idea of portals or gateways to different dimensions is a crucial element. It's how Harry and other characters access these new realms. Then, there's the matter of how the rules of magic change in these different dimensions. Maybe in one dimension, magic is based on emotions rather than incantations. Another key element is the role of the existing wizarding institutions like Hogwarts in relation to dimensional magic. Do they try to control it? Or do they encourage its study? And finally, the way dimensional magic affects the relationships between characters, such as Harry's friendship with Ron and Hermione when he starts using this new form of magic.
In these fanfictions, it expands the universe by introducing a new form of magic. Rune magic adds a layer of depth and mystery. For example, Harry might use rune magic to access hidden areas in Hogwarts that were previously unknown. It also changes the power dynamics. If Harry can use rune magic, it gives him an edge over his enemies and creates new storylines where he has to keep his new - found magic a secret.
In some fanfictions, Harry might use accidental magic to change his appearance slightly. For instance, his hair might change color when he's trying to hide from someone. This can add an interesting twist to the story as it shows how his magic can act on its own in unexpected ways. The accidental magic in these stories often serves to explore different aspects of Harry's character and his relationship with his magic that might not be fully explored in the original books.
In such fanfictions, one interesting concept could be the reimagining of magic spells. For example, the spells might have different incantations or effects. Another concept could be the alteration of magical creatures. They might have new behaviors or abilities. Also, the role of Hogwarts could be changed, like it having different houses or teaching methods.