Board Thread:Rewatching "Merlin" - Season Two/@comment-5102537-20130601104158/@comment-10341849-20130602131234

I think if Morgana knows Merlin has magic then the series will be different entirely. Morgana will know soon enough that Merlin is Emyrs, know that all her plans failed because of Merlin has magic and will surely expose him to Arthur and Uther to get him killed and out of her way as soon as possible.

Since the beginning, I think Morgana is destined to be the evil one, and that is why Gaius didn't want to help her like he helped Merlin. He could sensed the evil in Morgana. He thought that it was the best to let Morgana talent undeveloped.

It is just the best way to add to the drama that Merlin's magis is kept secret from her. It will be no fun at all if Morgana knows about Merlin's talent but Arthur doesn't. That's what I think.