A silver ter'angreal in the shape of a foxhead with only one eye showing, given to Mat Cauthon by the Eelfinn. It blocks both saidin and saidar from affecting the wearer directly, though indirect effects such as lightning called by the Power can still strike. A side effect is that it protects the wearer's dreams. The foxhead is shaded to resemble the ancient symbol of the Aes Sedai.