If Harry Potter had Magneto's powers in fanfiction, the power dynamic at Hogwarts would shift. He would no longer be just a wizard with a wand. He could use his new power to fix things around the school that are made of metal. In battles, he could attract all the metal - based spells towards him and then redirect them. This would make him a more formidable opponent and would also change how his friends and enemies view him. His enemies might be more afraid of him, and his friends might rely on him more for protection.
The story would change a great deal. He could use Magneto's powers to enhance his ability to escape from dangerous situations. For instance, if trapped in a room with metal bars, he could simply bend them and get out. His dueling style would also be different. Instead of just using spells, he could incorporate his power over metal to surprise his opponents.
The story would be revolutionized. Harry Potter having Magneto's powers means he could potentially control the very structure of Hogwarts, which has a lot of metal components. He could use this to his advantage in defending the school against Voldemort. He could also use it in a more subtle way, like influencing the metal parts in potions equipment to make better potions. His relationship with Dumbledore might change too, as Dumbledore would need to guide him on how to control this new and very different power, and also how to use it in the fight against the Dark Lord without causing too much chaos.
The story would become a mash - up of magic and mutant powers. Harry Potter's magical abilities like Apparition and the use of spells would add a new dimension to Magneto's fight. Their combined forces could change the power balance in whatever world they are in. Maybe they would start a new movement that combines the ideas of equality in the wizarding world and the mutant world.
If Harry Potter had Magneto's powers in fanfiction, it would completely transform his character. He might not rely so much on his wand for combat. Instead, he could manipulate the metal in the environment, like the suits of armor in Hogwarts. This would give him an edge in duels, as his opponents wouldn't be expecting such non - traditional magic. Also, it could potentially make him a target for those who fear powerful and different abilities, just like Magneto was in the X - Men universe.
His battles would be different. He could freeze his opponents' wands in ice, rendering them useless.
His powers could become a blend of Star Wars and Harry Potter elements. He might be able to use the Force to enhance magic spells or vice versa.
His relationship with the teachers would be quite altered. Professor Snape, for instance, would be even more suspicious of Harry. He might think Harry was using some dark form of magic to gain these ghost powers. On the other hand, Professor Dumbledore would likely be more understanding and see it as another step in Harry's journey. Among his peers, some might envy his powers, while others would be afraid. But his true friends would stay close. His relationship with the ghosts in Hogwarts would also change. Instead of just being an observer, he would be part of their world, and they might treat him differently, either as an equal or as a strange new entity in their midst.
If raised by Magneto, Harry's character would develop a more militant side. He'd see the world in terms of power struggles more clearly. Instead of waiting for threats to come to him, he'd actively seek out those who oppose him, like Voldemort, much earlier. His sense of justice would be more aligned with Magneto's views, which could lead to a more ruthless approach in dealing with enemies. He might not be as forgiving as in the original story and would be more likely to use extreme measures to protect what he believes in.
His powers might change in various ways. For instance, if the new world has a different type of magic energy, his spells could be either amplified or weakened. If the new world's magic is more elemental - based, like fire, water, earth, and air, he may need to learn how to adapt his existing spells to work with these elements. Maybe his Patronus charm would take on a different form depending on the new world's magic and its influence on him.
His story would be drastically different. He might not have the same fear of Voldemort as he would be in a different environment. Instead, he could be facing threats related to Rias' world like other devil clans or powerful supernatural beings.
His view of family would be different. Vikings had a strong sense of clan. So instead of longing for a family like he did in the original story, he'd be part of a large Viking family unit. His magical abilities might be more of a mystery to the Vikings around him, and they could either fear or revere him for it.
His story would change drastically. For one, his view of family would be different. Ashoka could provide a more loving and nurturing family environment compared to the Dursleys. His magical education might also be influenced. Maybe he would learn to combine magic with Ashoka's combat skills. His character development would be shaped by Ashoka's teachings on morality and leadership.