She might try to use the Triwizard Tournament as a platform for Voldemort's comeback. Bellatrix could manipulate the events of the tournament to make it seem like a sign of Voldemort's impending return. For example, she could hex one of the champions to make it look like a dark omen. She would also probably target Cedric Diggory, as he was a popular and good - hearted student, just to create more panic and fear among the wizarding community. And she would definitely be on the lookout for any opportunity to steal the Triwizard Cup and use it for her own dark purposes.
Well, they could change the course of the war. For example, Iron Man could use his advanced tech to quickly take out enemy tanks. Captain America would feel right at home in a way, fighting alongside soldiers again. And Thor could use his lightning powers to disrupt enemy lines.
In a time - travel scenario, Nagato could end up in a parallel universe. There, he might find an Akatsuki that is already at peace with the other ninja villages. He could learn from this version of Akatsuki and bring those ideas back to his own universe. This would be a complex and interesting plot, as he'd have to adapt to a different world and then figure out how to implement those changes in his own.
They would likely be extremely shocked by the technological advancements. For example, they might be amazed by the tall skyscrapers and flying vehicles if such things exist in the future of that fanfiction. They would also have to adapt to new social norms and ways of life.
In such a fanfiction scenario, he might use his knowledge of future events to better prepare the students. For example, he could teach them more effective defensive magic against threats he already faced.
Perhaps in this fanfiction, the Time - Turner malfunctions while Hermione is in the middle of a confrontation with Bellatrix. This could send them both to a different time period, maybe even one where the wizarding world is in a completely different state. They would have to find a way to work together, at least temporarily, to get back to their own time. Hermione would be reluctant to trust Bellatrix, but she might not have a choice. And Bellatrix would be both intrigued and suspicious of Hermione.
Draco as a Triwizard Tournament contestant would bring a different dynamic. His Slytherin cunning could help him in the tasks. However, he may also face internal conflict. On one hand, he wants to win for glory and to show up Harry Potter. On the other hand, he might be afraid of failing and bringing shame to his family. This inner struggle could be a central part of the fanfiction.
One possible scenario in this fanfiction could be that Harry and Fleur form an unexpected alliance during the Triwizard Tournament tasks. They might discover they have complementary skills, like Harry's courage and Fleur's elegance and magic related to water (since she's from Beauxbatons). This alliance could lead to them facing the challenges in a new and interesting way, perhaps with Fleur using her Veela charm in a creative manner to distract the obstacles while Harry uses his Gryffindor bravery to take on the more physical parts of the tasks.
There are fanfictions where Hermione and Fleur become friends during the Triwizard Tournament. In some stories, they start to see past their initial rivalries. Fleur might initially see Hermione as just a book - smart girl, but as they face the challenges of the tournament together, they develop a mutual respect. Maybe they work together on the Yule Ball preparations within the context of the tournament, which helps to strengthen their bond.
One great fanfiction could be where Harry and Luna team up in a unique way during the Triwizard Tournament tasks. Maybe Luna uses her off - beat magical knowledge to help Harry solve the puzzles in the maze. For example, she might recognize some magical creatures that Harry is unfamiliar with and guide him through.
There might be a fanfic where during the Triwizard Tournament, Harry gets cursed and Hermione has to find a way to break the curse. She races against time, using every spell and potion she knows. Meanwhile, she also has to deal with the tournament tasks on Harry's behalf. In the end, through her determination and love for Harry, she manages to break the curse and they both complete the tournament in an unexpected way.