A really engaging plotline could be Merlin having to teach Arthur about the ways of the Dragonlords. Arthur, being a king, would need to understand this new aspect of Merlin's life in order to better protect his kingdom. Merlin could show Arthur the magic and wisdom associated with being a Dragonlord, and they could form an even stronger bond through this shared knowledge.
Perhaps a plotline where Arthur has to deal with the political implications of Merlin being a Dragonlord. This could involve other kingdoms either fearing or trying to use Merlin for their own gain, and Arthur has to protect him while also managing diplomatic relations.
One interesting plotline could be Arthur's initial shock and then his gradual acceptance of Merlin's new identity. He might start to see Merlin in a whole new light and realize how much power Merlin truly holds.
Well, obviously Merlin and Arthur are the main characters. Merlin is the one whose secret as a Dragonlord is revealed, and Arthur is the one who discovers this secret.
One interesting plotline could be Merlin using his magic in modern times to secretly protect Arthur, who is a powerful businessman or politician. For example, he might use magic to prevent assassination attempts on Arthur.
One possible secret could be that Merlin is a powerful sorcerer from an ancient and powerful magical lineage. Maybe his family has a long - standing connection to Camelot that has been kept hidden.
One interesting plotline could be the knights and Arthur facing a new, powerful dark magic threat that only Merlin's unique powers can help them overcome. They might journey to a far - off land in search of a magical artifact Merlin has foreseen as the key to victory.
One popular plot is that Arthur is initially shocked and angry when he discovers Merlin's magic, but then he gradually realizes how Merlin has been using it to protect him all along. For example, in some fanfictions, Merlin uses his magic to save Arthur from a seemingly impossible battle, and Arthur finally comes to terms with Merlin's powers and they become even closer friends, united in a new way to protect Camelot.
Some fanfictions show Arthur becoming more dependent on Merlin's magic in certain situations. For instance, when facing a powerful enemy that can't be defeated by normal means. This changes the dynamic from just a king - servant relationship to more of a partnership. Merlin, on the other hand, might feel more confident in using his magic openly around Arthur, which also alters their interactions. They could have more equal conversations and decision - making processes.
One interesting plotline could be their journey to discover their true family history. Since they are brothers in this fanfiction, there might be secrets about their parents or heritage that they uncover together. Another could be them facing challenges as brothers, like one getting into trouble and the other having to save him. For example, Arthur might get captured and Merlin uses his magic to rescue him, strengthening their bond as brothers in the process.
For Merlin, there are both good and bad consequences. On the bad side, some of the more traditional and anti - magic people in Camelot might try to oppose him. However, since Arthur now knows, he has a powerful ally. Arthur can protect Merlin from those who would do him harm. Also, Merlin can now be more open about using his magic for the good of Camelot, which is a positive change.
Well, an interesting plot idea could involve Merlin meeting other dragonlords from different lands. He might have to team up with them to defeat a common enemy that threatens all magic - users. Also, a plot where Merlin loses his dragonlord powers temporarily and has to find a way to regain them while still protecting Camelot would be engaging. Additionally, a story where the dragons start to lose their magic due to a curse, and Merlin has to find a way to break it could be really cool.
In some versions of this type of fanfiction, Arthur's reaction is complex. He might be stunned into silence when he first finds out. His mind would be racing with thoughts about all the times Merlin has used his magic to save him or Camelot without his knowledge. After the shock subsides, he may have a heart - to - heart with Merlin. They would talk about the implications of the secret, and Arthur would likely start to view Merlin in a whole new light, as not just his servant but as a powerful ally with a great burden.