Well, Morgana's reaction might be complex. Given her own experiences with magic and how it has made her an outcast in some ways. She could be both angry and intrigued. Angry that Merlin didn't trust her enough to tell her sooner, but also intrigued because she now has someone who truly understands what it's like to have magic in Camelot. She might start to question Merlin about his powers, how he has managed to hide them for so long, and what his plans are for the future regarding his magic.
She could be shocked at first. After all, Merlin has been hiding his magic for so long. Maybe she feels a sense of betrayal initially, but then she might see an opportunity to have an ally in the world of magic.
She might be shocked at first. Given that in the original story Morgana has her own complex relationship with magic, seeing Merlin's magic could stir a mix of emotions in her, like envy or a sense of relief that she's not alone in her magical abilities.
He might face distrust from Morgana at first. She could think he has been using his magic against her without her knowledge.
It could be through a magical reveal or a series of mysterious events that lead her to the truth.
Their relationship could develop in a complex way. If Morgana ties up Merlin out of anger or suspicion initially, but then realizes she was wrong, it could lead to her feeling guilty. This might make her more open to Merlin's friendship in the future, and they could gradually build trust.
Yes, there are many. You can start by looking on fanfiction websites like Archive of Our Own. There, you'll find a variety of stories exploring the relationship between Merlin and Morgana. Some might focus on a romantic relationship that could have been, had things been different in the show. Others might take a more angsty turn, exploring the forbidden nature of their feelings in the context of the Arthurian world they inhabit.
A fanfiction could focus on the relationship between Mordred and Morgana. It could explore how Mordred came to be so loyal to Morgana in the first place. Was it out of fear, admiration, or something else? And how does Merlin fit into this complex dynamic? He might be seen as an outsider trying to break their bond.
In some fanfictions, Prince Merlin (assuming he has some sort of princely status in this AU) and Morgana might be forced into an alliance against a common enemy. Maybe an ancient evil that threatens Camelot in a way that neither of them can face alone. They would have to put aside their differences and work together, which could lead to a slow - burning romance.
It often starts with a spark of curiosity or an unexpected moment of connection. Maybe they see a different side of each other during a magical encounter. Then, as they interact more, they start to understand each other on a deeper level. Their relationship might develop slowly, with small acts of kindness and shared secrets.
In fanfiction, Evil Merlin can be depicted as a mastermind behind many dark plots, while Morgana is the face of the chaos they create. For instance, Merlin might be the one secretly pulling the strings, using his magic to make things happen, and Morgana is the one out in the open, using her charm and power to intimidate others. They are like two sides of the same evil coin, complementing each other in their wrongdoings.
One possibility is that there would be a great deal of tension. Old Merlin has seen so much and has his own wisdom, while Morgana has her own powers and motives. Maybe Merlin would try to persuade Morgana to abandon her dark path. He could use his experience and the bond they once had to appeal to her better nature.