Vid by AloraVideos ♥ ♥, Song is World on Fire by Les Friction. Posted February 6, 2013 so it includes clips from S5.
I have a lot of love for this song (World on Fire) and I was excited such a brilliantly done A/M fanvid was created using this song. There are also very nicely placed voiceovers. And Mordred is a part of the vid...as a part of the tragedy of Arthur's death and the prophecy. And the magic reveal is in this too. Just love it all. :)
(I still mean to rec these three Merlin fanvids...possibly I'll leave that for March.)