 When discussing the development of the season , Shand said that the pairing of Kyra and Prue Halliwell 's storylines was a " natural fit " , especially since both characters were his favorites from the series . He clarified that Kyra 's return , specifically her relationship with Benjamin , was central to the season and called it " straight up plot " and " <unk> " from Prue 's storylines in response to fans ' concerns about the character being limited to being part of a subplot . While the two women never interacted on the show , he explained that Prue <unk> through " all of the <unk> in all of the history to see who best tell her what 's the deal " with her new powers and destiny . Shand said Kyra was a vital part of Prue 's plans to perform the Advent , a ritual that would resurrect a powerful race of evil demons known as the Old Ones . 
