Board Thread:Show-Related Questions and Answers/@comment-26116863-20151117024202/@comment-6175354-20151201125904

Alex The OUaT Fan wrote: Actually I think Merlin has been the dark one from the start, but just a dark one who hadn't given in to the darkness, like Emma briefly. I think that the Holy Grail/Excalibur's magic is darkness, but to become the kind of dark one we know (Nimue, Rumple, Emma etc.) you have to give in to the darkness. At least that's the way I think of it. That is a very interesting theory, and explains why Merlin was so careful with his magic.