A great plotline in such fanfiction could be a Potion Master being framed for creating a harmful potion. The real culprit might be someone trying to discredit the Potion Master for personal gain, like a rival for a teaching position at Hogwarts. The Potion Master then has to prove their innocence while also dealing with the chaos that the false accusation has caused in the wizarding community. They might have to enlist the help of their students or former colleagues to clear their name.
In this fanfiction, a great plotline could be Harry's rivalry with other potion - makers. There could be a big competition where Harry has to prove his skills against some really tough opponents. He might struggle at first but then discovers a new ingredient or method that gives him an edge. His growth as a potion master could also be linked to his personal growth, like learning patience and precision in making potions which then reflects in his relationships and decision - making skills.
In some 'love potion' Harry Potter fanfics, the plot might revolve around a love potion being used as a weapon. Maybe a dark wizard or witch uses a powerful love potion to manipulate a group of students into doing their bidding. Harry and his friends would then have to find an antidote and stop the villain's plan. This could involve a lot of adventure, like sneaking into the potions classroom at Hogwarts to find the recipe for the antidote.
In some fanfictions, Harry's time - mastery allows him to interact with past versions of himself. This can create really complex and mind - bending scenarios. He could use these interactions to gain wisdom from his past experiences more directly, or to give his past self crucial information that would help him in his battles against Voldemort. For instance, he might tell his younger self about a hidden weakness of a particular Death Eater that he discovers in the future.
Perhaps a plot where Harry uses his mastery of snakes to uncover ancient secrets in Hogwarts. He could find hidden passages or long - forgotten magic related to snakes that no one else knew about. This would not only add to his own power but also change the dynamics of the wizarding world as they know it.
In some fanfictions, Harry's mastery of illusions might lead to him being able to enter people's dreams and manipulate them. He could use this power to either help his friends overcome their fears or to gather information from the enemy. However, he would also have to face the moral implications of such actions.
One interesting plotline could be Harry mastering new and powerful magic that was not explored in the original books. For example, he might discover a long - lost spellcasting technique. Another could be his relationships with other characters evolving in different ways, like a deeper friendship with Neville or a different kind of mentorship with McGonagall.
One interesting plotline could be Harry fully exploring and mastering the powers that come with being the Master of Death. He might use these powers to reshape the wizarding world in ways that were not possible before, like eradicating dark magic at its source.
Some cool potion ingredients in Harry Potter fanfiction are the fangs of a werewolf. These could potentially be used in a potion to control the werewolf transformation or to gain some of the werewolf's enhanced senses. Moonstone dust is also a great one. It has a connection to the moon and in fanfiction might be used in potions related to lunar magic, like a potion that only works during a full moon. And let's not forget the blood of a vampire. It's a rather dark ingredient, but in fanfiction it could be used in a potion to gain immortality or some form of dark power, although using it would likely be very controversial in the wizarding world.
One possible plotline could be Harry exploring the full extent of his newfound power as the Master of Death. He might use it to bring back loved ones in a way that doesn't disrupt the balance of the wizarding world. Another could be that he faces new and more powerful enemies who are threatened by his status.
One interesting plotline could be Harry fully exploring and mastering the powers that come with being the Master of Death. He might use these newfound abilities to reshape the wizarding world, like eliminating dark magic at its roots.