That wildness also made Maugrim possible; and because Maugrim came from outside the Tapestry there is no thread in it with his name on it, Flidais explains, and so he cannot die.
That untamed nature also enabled Maugrim; and since Maugrim originated from outside the Tapestry, there is no thread in it bearing his name, Flidais explains, and thus he cannot perish.