After having captured Alator of the Catha, a High Priest trained from birth to master all physical pain and separate his mind from his body, Morgana took Alator to her fortress to torture him and force him to reveal Emrys' real identity. The High Priestess used a Nathair, since it could cause the most "exquisite" pain, not in the body of the victim, but in his very soul, and not even Alator could separate his mind from his mind. Anyway, Alator's will was too strong for Morgana to break and so, after having learned that there was one other person who knew of Emrys' secret, she killed him by breaking the Priest's neck with a stunning spell (The Kindness of Strangers). The same Nathair was also used by the High Priestess to torture Gwaine, who had been captured by Morgana, along with his fri