Well, one unique element is the combination of two different mythologies. You have the well - known wizarding world of Harry Potter and the less explored merman lore. For example, in some fanfics, mermen might have their own type of magic that is different from what wizards use.
Another element is how the characters interact with the merman form of the characters. For instance, if Harry is a merman, how do his friends like Ron and Hermione react? How does he deal with his new form? This creates a lot of interesting character development and relationship - building that you don't see in the regular Harry Potter stories.
Friendship and acceptance is also a big theme. The merman character is usually an outsider in the Hogwarts world, and the story often focuses on how the other characters come to accept and befriend him. This is similar to how Harry Potter was an outsider at first in the wizarding world but found his place. In some fanfics, the merman might face discrimination at first because of his different appearance and abilities, but then through his actions and the kindness of others, he becomes part of the community.
The unique elements include the new relationships formed. Furry characters can form bonds with human characters in ways not seen in the original series. For example, a furry creature could be a secret protector of a Hogwarts student, and this relationship could develop over time. There are also unique settings created specifically for the furry characters, like hidden furry villages near the Hogwarts grounds where they live and practice their own kind of magic.
One unique element is the combination of Celtic mythology. The Morrigan is a significant figure in Celtic mythology, and when brought into the Harry Potter world, it creates a whole new set of magical concepts. For example, her powers related to war and fate can add a different layer of complexity to the story.
One unique element is the combination of magic systems. In 'Harry Potter', magic is mainly done through wands and spells, while the Dragonborn has shouts and different combat skills. Fanfics often blend these two in creative ways.
The unique element is the combination of two very different mythologies. Mermaids, with their own lore of the sea, and the wizarding world of Harry Potter. For example, in some fanfics, mermaids can use their own form of magic which is different from the spells in Hogwarts. This creates an interesting contrast.
One unique element could be the way Harry Potter's magic interacts with DC's technology. For instance, his spells might interfere with Batman's high - tech gadgets in unexpected ways.
One unique element is the new spells. In regular Harry Potter, we mostly see spells like Wingardium Leviosa. But in nature magic fanfics, there are spells like 'Floral Bloom' which makes flowers bloom instantly. Another is the connection with magical creatures. Instead of just taming them with normal magic, nature magic allows for a deeper bond, like being able to share thoughts with a unicorn through nature - based incantations.
One unique element can be the exploration of the language itself. In some fanfics, the author creates new Parseltongue words and phrases, adding depth to the concept. For example, in 'The Mysterious Parseltongue', the main character deciphers an ancient Parseltongue prophecy that has words not mentioned in the original books.
One unique element could be the infusion of Chinese cultural values. For example, the concept of family and loyalty might be emphasized in a different way compared to the original. Also, the magic system could potentially incorporate some Chinese mythological elements, like the use of certain Chinese symbols or creatures in the magic.
Well, one unique element could be the combination of the extremely dangerous Nundu with the concept of an Animagus. The Nundu is a very powerful and feared creature in the Harry Potter universe, and when you add the idea of a character being able to transform into something related to it, it creates a whole new level of intrigue and danger.