One idea could be Harry arriving in Westeros and using his magic to combat the White Walkers. His spells might be a new weapon against the undead. Another could be Harry getting involved in the power struggles between the different kingdoms, perhaps siding with a particular house and using his skills to help them gain the Iron Throne.
Well, a great plot could be that Harry is mistaken for a prophesied hero in Westeros. He then has to navigate through the various beliefs and expectations of the people while also trying to find a way back to his own world. He might learn about the different forms of magic in Westeros and combine it with his own to create unique solutions to problems like droughts or plagues in certain regions.
A really interesting plot for 'Harry in Westeros fanfiction' would be Harry being an outcast in Westeros at first because of his strange powers. But as time goes on, he befriends some of the misfits in the different kingdoms, like the Wildlings. Together, they form an unlikely alliance. Harry then uses his knowledge of strategy from Hogwarts (like the chess strategies) to outwit his enemies in battles for territory or resources in Westeros.
One idea could be breeding dragons in a unique way. Maybe creating a new breed by crossing different types of dragons. In Westeros fanfiction, this could be a very exciting plot point as dragons are such powerful and iconic creatures.
One possible plot could be that the fem Harry Potter arrives in Westeros with her magical abilities. She might get involved in the power struggles between the different houses. For example, she could use her magic to help a particular house gain an advantage in a battle, perhaps by creating illusions to deceive the enemy. Her unique brand of magic, different from the magic known in Westeros, would both amaze and frighten the people there.
Another plot might involve Harry forming alliances with some of the noble houses in Westeros. He could bring his unique perspective and skills to help them in battles or in diplomatic matters. He might introduce new forms of combat magic that give his allies an edge. And perhaps he has to navigate the complex web of relationships and loyalties in Westeros while staying true to his own values.
One possible plot could be that Harry Potter, through some magical accident or powerful spell, is transported to Westeros. He might use his magical abilities to quickly rise in power, perhaps by impressing the local lords with his feats of magic. He could then set out to unite the kingdoms under his rule, using a combination of wizardry and political savvy that he learned from his time at Hogwarts and in the wizarding world.
In a 'Harry Potter Lord in Westeros' fanfiction, the plot could center around Harry Potter becoming a lord in Westeros through some magical means. As a lord, he would have to deal with the typical issues like managing his lands, protecting his people, and forming alliances. However, his magic would give him an edge. He could use spells to improve the harvests, defend his castle from invaders more effectively, and even try to bridge the gap between the different houses by using his unique perspective from the wizarding world.
Another plot could be set in an alternate universe where Nagini has a different origin. Maybe she was an ordinary snake that was experimented on by dark wizards, and Harry stumbles upon her during his travels. He then decides to help her break free from the dark magic that binds her, and in the process, they form an unlikely bond. This bond could then be tested as they face various threats from both the wizarding world and those who want to use Nagini for their own evil purposes.
Perhaps they form a secret club within Hogwarts where they plan elaborate pranks on the Slytherins. This could involve using their combined knowledge of magic and mischief to outwit their rivals in really creative ways. They might also end up uncovering some dark secrets about the Slytherin common room in the process.
One idea could be a story where Harry discovers a hidden spellbook that once belonged to Lupin's family. With Lupin's help, he tries to decipher the spells inside and in the process, they unearth a long - forgotten mystery about Hogwarts.
Another plot could be a time - travel scenario. Harry goes back in time and tries to understand his early years with the Dursleys better. He might try to change some of the negative interactions and make them more positive, like showing Dudley that there's more to life than bullying.
One idea could be that Buckbeak helps Harry in a secret mission in the Forbidden Forest. Maybe there are dark creatures there that only Buckbeak can sense, and his flying ability and sharp eyes are crucial for Harry to complete the mission.