She might start using black magic out of a sense of desperation. Maybe she feels she has no other way to achieve her goals, like protecting her loved ones or getting revenge on her enemies.
Using black magic could have a negative impact on her own soul or magical essence. It might start to corrupt her, changing her personality. She could become more cruel, self - centered, and lose her moral compass. This would not only affect her relationships but also her own well - being as she gradually loses herself to the dark power of black magic.
Black magic in these fanfictions can function in various ways. It might involve the use of dark artifacts that have been enchanted with evil powers. These artifacts can be used to spread chaos or give the wielder unnatural abilities. Also, black magic can be passed down through generations in certain families, and those who inherit it may struggle with the temptation to use it. Some fanfictions show that black magic has a corrupting influence on the user, gradually changing their personality and making them more cruel and power - hungry.
In the original series, black magic is mostly straightforwardly bad. But in fanfiction, it can be more ambiguous. For example, a character might use black magic to save a loved one from a worse fate.
In fanfiction, black magic could make Harry's broken glasses unrepairable by normal means. For instance, a curse might be placed on the glasses so that any attempt to fix them with a simple Reparo spell fails.
In a Harry Potter and LOTR crossover fanfiction, black magic could take on different forms. In the Harry Potter universe, it's often associated with the Dark Arts like the Unforgivable Curses. In LOTR, dark magic is related to Sauron and his minions. A crossover might explore how wizards from Harry Potter's world react to the more ancient and malevolent black magic of Middle - earth.
One way to integrate it could be through time - travel. Suppose a wizard from the future where Gundam technology exists travels back to the Harry Potter era and brings with him the blueprints for the Black Magic Gundam. This causes a stir as different factions in the wizarding world either want to use it for their own gain or fear its power and want to prevent it from being built.
Harry grows by becoming more self - reliant. Learning Black family magic is likely not an easy task and he has to figure things out on his own. He becomes more confident in his abilities as he masters new spells and magic techniques.
She could use a magic - suppressing charm. This charm would make it so that her natural magical aura is hidden from other wizards and even from magical detection devices. For example, if a wizard were to pass by her with a magical detection spell active, they wouldn't sense her magic. Another way is by only using very basic and small - scale magic when absolutely necessary. Like if she needs to light a candle in a power outage, she might use a very tiny and discreet fire - making spell that looks almost like a normal match being lit.
Well, in the original Harry Potter series, black magic is clearly depicted as something evil. So from the perspective of the original lore, it's not ethical. Black magic often involves harming others and going against the basic moral principles in the wizarding world. However, in fanfiction, it can be a thought - experiment of sorts. Some might argue that it's just exploring a different side of a character, but it still treads on dangerous moral ground.
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.