One special power often seen in Harry Potter fanfiction is the power of resurrection. A character might have the ability to bring the dead back to life, which would have a huge impact on the wizarding world. It could change the course of battles and relationships. Another power could be the power of premonition on a much more detailed level. Instead of just having a few hazy visions like in the books, a character could see the exact future events, including what spells will be cast and who will be where at a given time. Also, some fanfictions feature characters with the power to manipulate magic itself, being able to change the rules of how spells work or even create entirely new spells that no one has ever seen before.
In some fanfictions, they might show Harry having dark powers through things like unexpected magical outbursts with a malevolent tinge. For example, he could accidentally use a spell that causes harm in a way that seems to draw on darker magic. However, in the original series, Harry is firmly on the side of light magic, so this is a departure in fanfiction.
Special powers in Harry Potter fanfiction enhance the story by adding new elements of conflict. For example, if a character has the power to control minds, it creates a moral dilemma as well as a power struggle. It also adds more excitement. If a character can teleport, it can lead to unexpected plot twists like suddenly appearing in a restricted area or escaping a seemingly inescapable situation. These powers can also develop characters further. A character with the power of healing might grow in compassion as they use their power to help others.
There could be. In fanfiction, the sky's the limit. Since this is a 'harry older brother of bwl' fanfic, his powers could be something that sets him apart from the original Harry. For example, he might have a power that is connected to the family's heritage in a deeper way. It could be a power that was dormant in the original story but is now awakened because of his new role as an older brother. This could lead to all sorts of interesting plot developments, like him having to learn to control this new power while also dealing with the responsibilities of being an older brother.
The powers might also change the way magic is perceived in the story. If Harry can do things like read minds or foresee events, it could make other forms of magic seem less powerful in comparison. Or it could inspire other characters to explore different, more psychic - related magic, thus expanding the magical lore in the fanfiction.
Well, if Harry Potter has Deadpool's powers, he might become more carefree and irreverent. His traditional sense of duty could be tempered with Deadpool's chaotic nature. He could start cracking more jokes during dangerous situations, like when facing Voldemort. His attitude towards rules might change too, as Deadpool is not one to follow rules strictly.
Perhaps the Sword Master has the power to communicate with the sword itself. The sword could give the wielder advice or warnings about upcoming danger. This would add an interesting dynamic to the story, as the Sword Master would not only be relying on their own skills but also on the wisdom of their weapon.
Another way is by combining different magic systems. Fanfiction writers might blend the magic of Hogwarts with other forms of magic from different mythologies. So Harry could end up with powers like the ability to use runes to enhance his spells or the power to call upon the spirits of nature for assistance, which are things not seen in the original series but add a whole new layer of creativity to his special powers in the fanfiction world.
Some fanfictions give Harry the power of elemental control. He can manipulate fire, water, air, and earth. This power often comes in handy during duels as he can create barriers of fire or gusts of wind to deflect spells. It also makes him a more formidable opponent against dark wizards who don't expect such a wide range of powers from him.
Well, there are fanfictions where Harry has godlike powers such as the ability to resurrect the dead. This completely changes the dynamic of the wizarding world as it goes against the natural laws of magic in the original series. Another aspect could be his mind - having the power to read and control the thoughts of every living being, making him almost omniscient and omnipotent within that fictional world.