I'd recommend 'A Black's Destiny'. It focuses on an OC Black who discovers a long - hidden family secret. This fanfiction is full of mystery and adventure, and it does a great job of staying true to the lore of the Harry Potter universe while introducing new and exciting elements through the OC.
One great 'Harry Potter OC Black fanfic' is 'The Black Heir'. It has an interesting original character who is related to the Black family and gets involved in many of the main plot events in a unique way. Another one could be 'Black Family Secrets Revealed' which delves deep into the history of the Black family through the eyes of an OC.
There's also 'The Enchanted Apprentice'. This fanfic has an OC who is apprenticed to a powerful wizard. The OC's journey to master magic is filled with challenges and adventures. The story does a great job of integrating the OC into the existing 'Harry Potter' world, with interactions with beloved characters like Harry, Hermione, and Ron.
There are quite a few 'oc raises Harry Potter' fanfictions. For example, in 'The Unconventional Upbringing', the oc is a time - traveling wizard from a different era. He decides to raise Harry Potter with knowledge from both the past and the future, which gives Harry a whole new perspective on magic. Then there's 'Raising Harry with Ancient Magic' where the oc is an expert in long - forgotten magical arts and uses this knowledge to raise Harry, making him a more well - rounded wizard compared to the books. 'The Oc's Guide to Raising Harry' is also a great one. Here, the oc is a very methodical and organized person who plans every aspect of Harry's upbringing, from his magical education to his social skills in the wizarding world.
Another great one could be 'A New Power in Hogwarts'. This fanfic features an overpowered OC who has a special gift related to magic that no one else in the story has. The OC's presence disrupts the normal hierarchy at Hogwarts and leads to many interesting plot twists as they interact with the likes of Harry, Hermione, and Ron.
There's 'A Mother's Magic'. In this fanfiction, the female OC is a powerful witch who discovers Harry early on. She decides to raise him away from the Dursleys. The story is interesting as it delves into how she teaches Harry things that Dumbledore might not have thought of, like a more practical approach to magic and dealing with the wizarding world politics from a young age.
One great Orion Black Harry Potter fanfiction could be 'Orion's Heir'. It delves into the idea of Orion Black having an unforeseen connection to Harry Potter. Another is 'Orion Black: The Lost Years' which fills in the gaps of Orion's life in relation to the Potterverse. There's also 'Orion and Harry: A Different Bond' that explores a unique relationship between them.
One great 'Harry Potter Black Ivy' fanfiction could be 'The Adventures of Black Ivy at Hogwarts'. It might explore the character of Black Ivy in the magical world of Harry Potter, her relationships with other characters, and how she navigates through the challenges at Hogwarts. Another could be 'Black Ivy's Secret Origins' which delves into her backstory and how she came to be in the wizarding world. There could also be 'Black Ivy and the Forbidden Magic' which focuses on her encounters with dangerous and forbidden magic within the Potterverse.
One great 'Harry Potter Arcturus Black' fanfiction is 'The Legacy of Arcturus Black'. It delves deep into his family history and how it intertwines with the main events in the Harry Potter universe. The author does an amazing job of character development, making Arcturus a complex and interesting figure.
One popular 'Harry Potter Cassandra Black' fanfiction could be 'The Black Heirloom'. It often delves into the backstory of Cassandra Black and her connection to the Potter family in ways not explored in the original series. Another might be 'Cassandra Black's Secret', which could focus on some hidden power or past event related to her character.
One popular one might be those that explore Leo Black's relationship with other well - known characters in the Harry Potter world. For example, stories where he interacts with the Marauders. Another could be fanfictions that give Leo Black a unique backstory that ties into the existing lore of the wizarding world in an interesting way.