Goblins are very good at magic related to security and protection. So Harry could learn spells to protect places or objects better. He might also learn how to detect and break through different kinds of magical security measures, which would be useful in his adventures against dark wizards. He could also learn about the magic of precious stones and how to use them in different spells.
The goblins could teach Harry some defensive magic that is unique to their kind. This could be magic that is not taught in Hogwarts. For example, a type of shielding spell that is more effective against dark magic that specifically targets goblin - made items. This would give Harry an edge in battles against the dark forces.
Well, it might be that Harry discovers a hidden goblin training ground. There, he learns unique magic skills not taught at Hogwarts. Maybe he's taught how to use ancient goblin-made weapons in combat, which gives him an edge in fighting dark wizards.
In this fanfiction, the goblin training could make Harry Potter more assertive. Goblins are not afraid to stand up for themselves and their rights. Harry, being trained by them, could inherit this trait. He might become more vocal about his own needs and desires, not just following what others expect of him. He could also develop a deeper understanding of the magical underworld, which would be reflected in his more guarded and worldly character.
Well, perhaps Harry could be trained in some long - lost or dark magic that Dumbledore has been hiding from him. This new training might make him even more powerful than before, able to defeat Voldemort in a more spectacular way.
Well, it could be really interesting. Maybe Harry would learn different kinds of magic that are unique to goblins. He might gain a whole new perspective on the wizarding world. For example, goblin magic could be more about manipulating precious metals and stones in a magical way. Harry could use this knowledge to his advantage in future battles or challenges. He could also form unexpected alliances with the goblins, which would change the power dynamics in the wizarding world.
There's a chance it could be a powerful house - elf. House - elves are known for their own brand of magic, and one particularly rebellious or enlightened house - elf could decide to train Harry in magic that is more about stealth and quick - thinking. After all, house - elves have to be very sneaky to avoid detection by their masters most of the time, and this kind of skill could be very useful for Harry in his battles against Voldemort.
The goblin training could transform Harry into a more street - smart wizard. Goblins have their own set of rules and ways of doing things. Harry would have to adapt to these new ways. This could lead to him being less trusting of traditional wizarding institutions and more likely to question the status quo. His character might become more resourceful as he learns from the goblins' unique skills and knowledge.
Obviously, Harry Potter himself. And then there would be the goblins. Maybe Griphook, as he was one of the more well - known goblins in the original series. He could be one of the main trainers of Harry.
If Harry is raised by Sesshomaru, the magic he learns would be a blend of wizarding magic and something more influenced by Sesshomaru's world. He could learn to use his magic in a more silent and stealthy way, as Sesshomaru is often a silent predator. His magic might also be more attuned to nature, as Sesshomaru has a connection to the natural world in his own realm. Harry might be taught to use magic to create illusions not just for fun but as a serious combat tactic, and he could learn to manipulate his magic in ways that are more fluid and less structured than traditional wizarding magic, allowing for more creative and unexpected attacks.
His character would likely become more cunning. Goblins are known for their cleverness, and under their training, Harry would pick up on their shrewd ways. He might be less trusting and more calculating, which could be both a strength and a weakness.