In some fanfictions, the most dramatic scene could be when Hermione is on the verge of defeat but then draws on some hidden strength or knowledge. Maybe she has a sudden realization about a spell or a magical object that turns the tables on Bellatrix. The moment of that realization, the look of shock on Bellatrix's face, and the subsequent change in the fight's momentum would be extremely dramatic.
One of the most dramatic scenes could be when Hermione first stands up to Bellatrix. The tension in the air as their wands are raised, and the look of determination on Hermione's face against Bellatrix's maniacal grin.
In some fanfictions, Ron saves Hermione from Bellatrix in a more psychological way. He manages to get into Bellatrix's head, using a rare mind - influencing spell. He makes Bellatrix see her worst fears, which causes her to drop her wand and flee, leaving Hermione unharmed. This shows that Ron doesn't always have to rely on brute force to save Hermione. It also adds an interesting layer to his character as someone who can be clever and resourceful in different ways.
Perhaps a scene where Hermione confronts Snape about his treatment of her friends. In the fanfiction, she could gather evidence of how Snape has been singling out Harry or Ron, and then she barges into his office. She would start off calmly, but as Snape tries to dismiss her, she gets more and more passionate, really telling him off for his behavior.
In a fanfiction duel between Hermione and Bellatrix, Hermione could potentially win. She is highly intelligent and has shown great skill in magic throughout the series. She might use her knowledge of spells and her quick thinking to outwit Bellatrix.
One reason could be a sense of kinship. Bellatrix might see a part of herself in Hermione's fierce loyalty and determination. Another could be a change of heart. Maybe she realizes the error of her ways and decides to protect Hermione as a way to atone for her past actions.
The scene where the archer time - travels right at the moment Saber is about to be defeated. He appears in a flash of light, his arrows ready, and he starts taking down the enemies one by one. The look of determination on his face and the confusion on the enemies' faces would be a great moment. And then, when he finally reaches Saber and offers his hand to help her up, it would be a very touching and dramatic scene in the fanfiction.
Well, it could be that Bellatrix adopts Hermione thinking she can use her to get to Harry Potter. But as time goes on, Hermione manages to turn the tables and uses Bellatrix's own desires against her. She convinces Bellatrix that she can lead her to greater power if she turns against Voldemort. This not only creates a rift between Bellatrix and her dark lord but also sets off a chain of events that no one could have predicted.
A really intriguing plot is when Hermione time - travels to save Bellatrix from becoming evil. It challenges the whole idea of good and evil in the wizarding world. Another is when Bellatrix travels forward in time and meets Hermione in a modern - day Hogwarts. It's interesting to see how Bellatrix reacts to the changes in the wizarding world.
One reason could be pure hatred. Bellatrix despises Muggle - borns, and Hermione being a very intelligent and powerful Muggle - born would be a prime target for her wrath. Another could be jealousy. Hermione's skills and knowledge might make Bellatrix feel inferior, leading her to lash out.
One of the most dramatic scenes could be the final face - off between Naruto and Madara. Naruto, filled with resolve, might use a new and powerful jutsu that catches Madara off - guard. The moment when Naruto's attack lands on Madara, with a big explosion and a flash of light, would be very dramatic.
One possible plot could be that Bellatrix captures Hermione and tries to torture her for information about Harry. But Hermione, using her wits and some new-found powerful magic she has been secretly studying, manages to turn the tables and kill Bellatrix in self - defense.