One common theme is the clash of different magical systems. Merlin has his druidic magic and Loki has his Asgardian magic, so a lot of fanfics explore how these two types of magic interact. For example, in some stories, they might try to combine their powers to defeat a common enemy.
The concept of changing destinies is also common. Merlin has a pre - set destiny in Camelot, and Loki has his own path in Asgard and the Nine Realms. Fanfictions often play with the idea of how their meeting can alter those destinies. Maybe they can prevent a great tragedy from happening in either realm or create a new future that was not originally foreseen.
Another one is 'When Merlin Met Loki'. This fanfiction is more of a light - hearted take on the two characters meeting. It has some humorous moments as Merlin tries to figure out Loki's trickster ways and Loki is both amused and a bit frustrated by Merlin's pure - hearted magic. It's a fun read if you want something not too serious.
Well, 'Merlin and Loki: Across the Realms' is an interesting read. It has Merlin and Loki traveling between their respective realms and facing various challenges together. It shows how they adapt to each other's worlds and use their combined powers to overcome difficulties. Also, 'The Alliance of the Tricksters' is about how the two trickster - like characters join forces and play tricks on their enemies while also trying to protect their own.
It could be a complex relationship. Loki, being his mother, might be both nurturing and mischievous towards Merlin. She could teach him all kinds of magic, both the useful and the tricky ones. Merlin would probably have a deep respect for her, but also be a bit wary of her tricks.
Well, it changes a great deal. Traditionally, Merlin's origin is somewhat mysterious but not related to Loki. If Loki is his mother in this fanfic, it might introduce elements of Norse mythology into the Arthurian legend. For example, Loki's trickster nature could be passed on to Merlin, making him even more cunning and unpredictable in his magic and interactions. It could also mean that Merlin has a connection to the Norse gods, which might lead to different plotlines like dealing with Norse threats or having allies from that pantheon.
In a more humorous take on the 'Merlin tied to a bed' fanfiction, it could be that Merlin has fallen ill and the overly - protective Gaius has tied him to the bed to make sure he rests. Merlin, being the active person he is, complains constantly. Arthur comes to visit and teases Merlin about finally being still for once. Meanwhile, Merlin tries to convince Arthur to let him loose, promising that he'll be fine. Eventually, Gaius relents and unties Merlin, who then immediately starts bustling around the room.
If Merlin died in the fanfiction, it could trigger a series of tragic events. The balance of power could tip, and the villains might seize the opportunity to attack. It could also bring out hidden strengths in the remaining characters as they try to cope with the loss.
One more idea is that Merlin is tied to the bed in a dream - like state created by an ancient magic. In this dream world, he is faced with his deepest fears and insecurities. His friends in the real world notice his strange behavior and try to wake him up. Merlin, while in the dream, has to find the source of the magic that is binding him and break free. Through his inner strength and the memories of his friends, he manages to do so and wakes up, having learned more about himself and his magic.