<P> The writers of the series often use elements of fantasy and horror as metaphors for real - life conflicts . The series' use of magic, as noted by religion professor Gregory Stevenson, neither promotes nor denigrates Wiccan ideals and Willow rejects Wiccan colleagues for not practicing the magic she favors . Throughout the series, magic is employed to represent different ideas ---relationships, sexuality, ostracism, power, and particularly for Willow, addiction ---that change between episodes and seasons . The ethical judgment of magic, therefore, lies in the results: performing magic to meet selfish needs or neglecting to appreciate its power often ends disastrously . Using it wisely for altruistic reasons is considered a positive act on the series . </P> <P> Through witchcraft, Willow becomes the only member of the group to cause damage to Glory . She reveals that the spells she casts are physically demanding, giving her headaches and nosebleeds . When Glory assaults Tara, making her insane, Willow, in a magical rage that causes her eyes to turn black, finds Glory and battles her . She does not come from the battle unscathed (after all, Glory is a goddess and Willow "just" a very powerful witch) and must be assisted by Buffy, but her power is evident and surprising to her friends . The final episode of the fifth season sees Willow restoring Tara's sanity and crucially weakening Glory in the process . It also features Buffy's death, sacrificing herself to save the world . </P> <P> Willow and Tara move into the Summers house and raise Buffy's younger sister Dawn (Michelle Trachtenberg). Fearing that Buffy is in hell, Willow suggests at the beginning of the sixth season that she be raised from the dead . In a dark ceremony in which she expels a snake from her mouth, Willow performs the magic necessary to bring Buffy back . She is successful, but Buffy keeps it secret that she believes she was in heaven . </P> <P> Willow's powers grow stronger; she uses telepathy which her friends find intrusive, and she begins to cast spells to manipulate Tara . After Willow fails Tara's challenge to go for one week without performing magic, Tara leaves her, and for two episodes Willow descends into addiction that almost gets Dawn killed . Willow goes for months without any magic, helping Buffy track three geeks called The Trio who grandiosely aspire to be supervillains . </P>

When does willow find out she's a witch