All women have power in Arthurian Literature and all those portrayed are always a threat to patriarchy. They all have the ability to do or to use magic [possible exception is Isode, she seems to simply be a victim of it]. Maidens use magic almost constantly [Lunete and Lyonet], beloveds have access to it [Isode is victim to the potion, whilst Laudine has a magic ring and is plagued by ownership of a particularly vicious Jungian fountain]. Enchantresses are slightly more complicated. Although there are some women who can be purely designated `witch' [Morgan le Fay, Nenieve/ Vivian/ Nimue] the pervasion of magical signifiers throughout the text in reference to women means that the term `witch' cannot simply be attached to those who use magic. Neither can it be reserved for those who use magic directly against patriarchy: Nenieve/ Nimue may lock Merlin away in a cave but...