Perhaps the fanfic's plot involves a character who is unknowingly Merlin's apprentice. They start having strange dreams about Merlin guiding them. As they explore these dreams, they learn skills like time - traveling magic which Merlin was known for. They then use this ability to go back in time and change certain events in the wizarding world's history for the better, all while trying to keep it a secret from the other Hogwarts students and faculty.
Well, it could be about Harry Potter discovering some long - lost magic that was once taught by Merlin. Maybe he stumbles upon an ancient spellbook or a hidden place where Merlin's teachings are preserved.
Another option could be Luna Lovegood. She has a very unique perspective on magic already. If she were Merlin's apprentice, she could bring her eccentric ideas and combine them with Merlin's ancient magic. Her friendship with Harry Potter and the others could also play a big role in how she uses her newfound status as Merlin's apprentice to help the wizarding world.
Well, it could be about a new character in the Harry Potter world who has the powers or the role similar to Merlin. Maybe this new character uses magic in a way that combines the traditional Harry Potter magic with the ancient and powerful magic associated with Merlin. For example, they might be able to perform spells that are long forgotten in the wizarding world but were common during Merlin's time.
Another possibility is that Percy's friends from the Percy Jackson universe somehow cross over as well. They could all get involved in the politics and magic of Camelot. Percy, as Merlin's apprentice, might be in a unique position to bridge the gap between the demigod world and the world of Merlin, and together they could face a great threat that neither world could handle alone.
One possible plot could be that the Squib apprentice, despite not having magic, has a deep understanding of the magical world's history and lore. Severus discovers this and takes the Squib under his wing. Together, they might uncover some long - forgotten secrets about Hogwarts or certain potions. As they dig deeper, they face opposition from some traditional wizards who don't believe a Squib should be involved in such important matters.
I'm not sure specifically as there could be many different interpretations in fanfics. But generally, it might explore Harry Potter having a connection to Merlin, perhaps inheriting some of Merlin's powers or facing challenges related to that heritage.
In this fanfic, the daughter could be from a long - lost line of powerful wizards. The Staff of Merlin is a key element in her journey. She might start off not knowing about her heritage or the power of the staff. Harry Potter could cross paths with her when she accidentally uncovers the staff. Then they team up to prevent the staff from falling into the wrong hands. There could be a lot of magic, mystery, and adventure as they face different magical creatures and dark forces trying to steal the staff.
One possible plot could be that Harry discovers a hidden passage in Hogwarts that leads to Merlin's Castle. There, he finds ancient spells and artifacts that help him in his fight against Voldemort. Maybe he even meets a ghostly form of Merlin who gives him advice.
The plot could revolve around Harry's apprenticeship under Nicholas Flamel. Harry might be chosen because of his unique connection to Voldemort. Flamel could see that Harry has a special destiny and decides to train him in the ways of alchemy. This could include learning how to transmute substances, understand the properties of magical elements, and use alchemy for defense and offense. Harry could also learn about the history of magic through Flamel's eyes, which is much longer and deeper than what he has learned at Hogwarts. There could be a lot of adventures where Harry uses his newfound alchemical knowledge to fight against the forces of evil.
Maybe the story could revolve around Harry being Ollivander's apprentice during a time of great danger in the wizarding world. As an apprentice, he has access to Ollivander's secrets and knowledge. He uses this to his advantage when fighting against dark forces. For example, he might learn how to repair broken wands quickly, which becomes a crucial skill during battles when wands are often damaged.