Thesmophoria

Her end under Voldermort's wand set back some of Lily Potter's plans, but not all was lost. After defeating Death and banishing the pesky Dark Lord with her stunt, she even gained a new follower. Lily won't leave anything stay between her and the new world she planned since infancy, a world of light and prosperity where she is the one and only Goddess. Dark!Lily Harem!Harry sorta.