User blog comment:Longlivemerlin/Temporary? Or Permanently? Magic reveal talk! (SPOILERS FOR EPISODE 12 & 13!)/@comment-24.165.30.81-20121218031413

Well, we know he will not lose his magic, I am positive. So really that's nothing to question, and a spoiler said Gwaine will know, but i doubt in a good way since he is gonna team up with Eira. I don't think there is a large enough time for Gwaine and Merlin to talk about it before the battle