Although Morgause noticed something different about Merlin, she failed to realize his gift and her attempts to kill him were foiled, first by Kilgharrah (The Tears of Uther Pendragon) and then by Gaius (The Coming of Arthur).
For years, Morgana and Merlin battled it out as she tried to take the throne from Arthur. She couldn't understand why they always seemed one step ahead of her of all times. However, Morgana soon got the answer she desired most in "The Drawing of the Dark" when Mordred revealed Merlin's identity as Emrys.
The only people in the show who know about his powers are Hunith, Merlin's mother, William, Merlin's childhood friend, Gaius, Kilgharrah, Nimueh, Mordred and the Druids, Edwin Muirden, a warlock who was killed after attempting to get revenge on Uther for the deaths of his parents, Lancelot, a deceased knight of the ...
All 6 of the Knights know about Merlin's magic, but all think they're the only one to know: So the Knights (Arthur, Gwaine, Percival, Elyan, Leon, Lancelot) + Merlin are like,,,, investigating something. Ya know, the norm.
Mordred as a young boy keeps calling Merlin "Emrys", which is actually Merlin's name as a Celtic druid and sorcerer. In Welsh, Merlin's full real name is actually Myrddin Wynn Emrys. Myrddin is his first name, Wynn is his family name and Emrys is his druid name.
Arthur was indoctrinated to believe magic led to people becoming power-hungry and evil. All his brushes with magic ranged from annoying to traumatizing. It took the time for him to become practically brothers with Merlin. It took time for him to get to the point where he might slightly accept him for his magic.
In the end of episode 5x11 "The Drawing of the Dark", Mordred reveals Morgana that Emrys, whom she has been searching for long, lives in Camelot and is, in fact, our hero Merlin.
Unbeknownst to him, Lenore had kept the sword hidden from him but told him that it had been destroyed. After the sword was removed from his body, Merlin lost his magic, though he tried to keep that hidden from others in order to keep up the appearance that he is still very powerful.
Sir Lancelot was a Knight of the Round Table. He was one of the first to discover Merlin's magic and was known to be in love with Gwen. Many (including Arthur Pendragon) regarded him as the noblest of Camelot's Knights, especially after sacrificing himself on the Isle of the Blessed.
The French Vulgate texts establish the idea that Viviane is Merlin's student as well as the woman that he is in love with. We also learn that Merlin is the son of the devil. Viviane and Merlin are in love, and Viviane wishes to preserve the state of happiness that they are in.
Arthur, son of Igraine and Uther Pendragon, is thus Morgan's half-brother, and her full sisters include Mordred's mother, the Queen of Orkney. The young Morgan unhappily marries Urien, with whom she has a son, Yvain.
Instead of telling her about his powers in order to comfort her about her own, he tried to help without showing he actually understood her fear. As a result, it is Morgous instead of Merlin who teaches Morgana about magic and its purpose, so Morgan's learns to use her power for evil instead of for good.
Morgana is born in Camelot to Uther Pendragon and Lady Vivienne. Growing up in the household of Gorlois, Morgana and Gorlois are led to believe that they are father and daughter.
Merlin is also extremely powerful like Morgana however he doesn't practice too much dark magic. Overall, Merlin would win but Morgana would've been a close second if she realised Merlin was Emrys sooner.
So, Merlin ends up with powers from both demons and from God. He is basically all-powerful as a result. He can see everything in the past, everything in the present, and everything in the future. He draws his extensive magical abilities from both sources and is able to perform extraordinary magic as a result.
so im inclined to say that dumbledore and other powerful wizard fro modern age are more powerful than even Merlin, even though Merlin is probably the most important/influential wizard of all time.
Morgana catches up with Merlin and Arthur and drives their horses away, but she is killed by Merlin wielding Excalibur. Without horses, Merlin cannot get Arthur to the Isle in time, and Arthur dies in Merlin's arms, after thanking his friend for everything he has done.
Old Merlin, otherwise known as Emrys, is Merlin's alter ego. The young warlock uses an aging spell to transform himself into an old man and must take a potion to transform back to his young self.
Morgana is therefore poisoned by a reluctant Merlin, who on Kilgharrah's advice sees it as his only option, and as Arthur fights Morgause's knights Morgana begins to suffocate as the hemlock enters her system, falling unconscious after realising that Merlin has poisoned her.
In the Perceval en prose (also known as the Didot Perceval and also attributed to Robert), where Merlin is the initiator of the Grail Quest and cannot die until the end of days, he eventually retires after Arthur's downfall by turning himself into a bird and entering the mysterious esplumoir, never to be seen again.
Some have speculated that they shared something more than friendship, and the producers confirmed this in the commentary of the last episode, "Diamond of the Day part two." Julian Murphy called it, "A love story between two men."
Merlin has always been obsessed with magic, and Arthur's Chaos was a new development she wasn't fully familiar with. Hence, it served as the perfect development for Merlin to fawn over. During Arthur's awakening as the "King of Chaos," Arthur's friend and pet, Cath, revealed its nature.
