One possibility could be that Harry goes back in time and is trained by some of the greatest wizards of the past. Maybe he learns advanced magic spells that have been long forgotten in his own time. This training could help him become even more powerful and perhaps change the course of future events for the better in the wizarding world.
Maybe it could be Godric Gryffindor. Since Harry is in Gryffindor house, Gryffindor himself might take it upon himself to train Harry, passing on his courage - based magic and sword - fighting skills.
Well, one possibility is that Harry could accidentally trigger a time - turning spell while in Hogwarts. Once stuck in the past, he might have to deal with a younger Severus Snape. Maybe he tries to change some events related to Snape's past to improve their relationship in the future.
Well, Harry could become an even more powerful wizard. Merlin is known for his great magic skills. He might teach Harry some ancient spells that are long forgotten in the wizarding world of Harry's time. This could give Harry an edge against Voldemort or any other dark forces.
Well, perhaps it could be about Merlin using his ancient and powerful magic to train Harry in combat skills. Maybe he teaches Harry spells that have been long forgotten.
Well, it could be that Merlin teaches Harry some ancient and powerful magic. Maybe Merlin shows Harry how to control magic in a more instinctive way, different from what he learned at Hogwarts.
Maybe Harry discovers some long - lost magic techniques taught by Godric. He could become super powerful and use ancient spells to fight Voldemort.
The plot could involve Harry using the trained hawk for various tasks like delivering messages secretly. Maybe the hawk helps him spy on the bad guys in Hogwarts, flying around unnoticed and reporting back to Harry.
Well, in this fanfiction, it could be that Hephaestus trains Harry Potter to have a better understanding of the more physical and mechanical aspects of magic. For example, he might learn to build magical devices that can be used in battles or for other important tasks. This would give Harry an edge over his enemies as he'd have skills that no other wizard has. It could also lead to new alliances as other wizards might be interested in his newfound abilities.
Well, perhaps in this fanfiction, Harry discovers he has an affinity for snakes early on. Maybe he's able to communicate with them in a deeper way than Parseltongue allows. The snakes could train him in stealth and survival skills, like how to move quietly in the Forbidden Forest or find hidden passages. They could also teach him some unique magic that is related to the ancient magic of serpents.
Maybe it's about Harry learning some advanced magic spells from Flitwick. Flitwick could be teaching Harry unique charms or how to use his wand more effectively.