Harry might face a lot of criticism. The wizarding community might think he's being naive by bringing back Pettigrew. There's also the risk that Pettigrew could double - cross him. After all, Pettigrew has a history of betraying those who trust him. This could put Harry in a very difficult situation, especially if Pettigrew lies about Harry or tries to frame him for something.
Well, it could drastically change things. For one, Pettigrew's knowledge of Voldemort's plans would be a huge factor. Harry might use Pettigrew to expose more about Voldemort's return, which could lead to a quicker response from the wizarding world. Also, it could change Harry's relationship with Sirius, as Pettigrew was the key in Sirius' false imprisonment.
Yes, it can be quite popular. Many fans are intrigued by the idea of Harry having the power to bring back the dead. It adds a whole new level of drama and exploration to the existing Harry Potter universe. It allows for different storylines such as reuniting with lost loved ones or changing the course of the wizarding world's history.
One popular fanfiction with this concept might be 'The Resurrection of Sirius' (this is a made - up name for example). You can search for such fanfics on platforms like Fanfiction.net or Archive of Our Own.
A common plot device is the existence of a hidden magic that has been forgotten or suppressed. Harry stumbles upon this magic and realizes its potential to reverse death. There could also be a connection to the afterlife. For example, Harry might have to journey to the afterlife realm and bargain with the forces there to bring someone back. And sometimes, the dead themselves play a role in their own resurrection. They might communicate with Harry in dreams or visions, urging him to find a way to bring them back.
In the context of fanfiction, it's possible. Fanfiction allows for creative interpretations and bending of the original Harry Potter lore. However, in the official canon, once a character like Cedric is dead, they stay dead. But in fan - created stories, Hermione's intelligence and magical abilities could be stretched to include a resurrection spell or some other form of magic to bring Cedric back. It gives fans a chance to explore 'what - if' scenarios.
One possible fanfiction could be where Harry uses a powerful, ancient magic that he discovers in a hidden chamber at Hogwarts. This magic has the power to reverse death, but he doesn't fully understand the consequences. So, when he brings Voldemort back, Voldemort is initially weak and Harry tries to keep him in check while learning more about this new situation.
One popular 'Harry Brings Lily Back' fanfiction might be 'A Mother's Return'. In this fic, Harry discovers a powerful time - turning spell and uses it to bring Lily back. It delves into the emotional reunions and how Lily's return changes the wizarding world's dynamic. Another could be 'Lily's Second Chance' where Harry's love for his mother drives him to brave many challenges to bring her back. This one focuses on the bond between mother and son and how it overcomes all odds.
He might face the challenges of the Marauder's Map all over again. Since he already knows about it, he could use it in new and unexpected ways to outwit his enemies or just to have some fun exploring Hogwarts secrets.