Well, perhaps a plotline where Harry uses his unique heritage to gain access to ancient and forbidden magics. He could then use this knowledge to battle new and powerful dark forces that are emerging in the wizarding world. And also, there could be a story arc about him trying to find out more about his 'father' Nyarlathotep and what that truly means for his identity.
In some fanfictions, there could be a plotline where Harry's connection to Nyarlathotep makes him a target for cults or secret societies within the wizarding world. These groups might want to either worship him or sacrifice him depending on their beliefs. This would put Harry in a very dangerous and complex situation where he has to constantly be on guard against these hidden threats.
One interesting story could be about Harry Potter accidentally stumbling upon the power of Nyarlathotep in the Forbidden Forest. Maybe he has to use some of the dark knowledge associated with Nyarlathotep to fight a new, powerful dark wizard that the regular magic of Hogwarts can't handle.
One possible plotline could be Harry's struggle with his dual heritage. He has to deal with the wizarding world of Harry Potter and the Norse mythology world of Loki. For example, he might face challenges in learning magic in a way that combines both magical systems. Another plotline could involve his relationships with other characters. Since he is the son of Loki, he might have a more complex and devious side to his personality, which could create interesting dynamics with his friends like Hermione and Ron. They might be initially suspicious of his motives at times.
Well, perhaps a plotline where Harry has to use his Pegasus - related powers to save Hogwarts from a new and mysterious threat. Since he is the son of Pegasus, he might have the ability to fly faster and more gracefully than on a normal broomstick, allowing him to reach places quickly and perform daring rescues. Also, his connection to Pegasus could lead to new magical creatures being introduced into the story, like more mythical flying beasts that he can befriend or control.
One interesting plotline could be Harry exploring his new powers as the son of Hypnos. Maybe he can use sleep - related magic in unique ways, like putting his enemies into a deep slumber during battles.
One interesting plotline could be Harry having to face new and more powerful dark wizards that are emerging in the post - Voldemort era. He might have to use his skills in a different way. Another could be Harry exploring his family's history more deeply and finding secrets that change his perception of himself. Maybe he discovers some long - lost relatives who have their own magical abilities and stories.
One possible interesting plotline could be Harry's discovery of his connection to Artemis. This might lead to him having unique powers related to the moon or the hunt, like enhanced archery skills or the ability to communicate with certain magical creatures associated with Artemis. Another could be his interactions with the existing characters in the Harry Potter universe, such as how Hermione and Ron react to his newfound heritage.
One interesting plotline could be Harry's discovery of his unique powers as the 'Son of Chaos'. Maybe he can manipulate reality in ways that are completely unexpected, like creating new magical creatures or changing the rules of existing spells.
One possible plotline could be the son having unique magical abilities that are different from Harry's. For example, he might be able to communicate with magical creatures in a way no one else can. Another could be the son getting lost in a time - traveling adventure and meeting Harry's parents. Or perhaps he discovers a hidden part of Hogwarts that holds a great secret related to his family.
One possible interesting plotline could be how Harry, as the son of Revan, discovers his true heritage. Maybe there are secrets hidden in the wizarding world related to his father that he has to uncover. Another could be his interactions with the existing characters in the Harry Potter universe. For example, how would Dumbledore react to this new aspect of Harry's identity? And how would Harry's relationship with his friends like Ron and Hermione change as he delves into his newfound lineage.
Another plotline could involve Harry interacting with Asgardian characters in the wizarding world. Maybe Loki shows up at Hogwarts and causes some mischief, and Harry has to use his newfound Asgardian knowledge to deal with him. This could lead to some really exciting adventures and battles within the halls of Hogwarts.