Belladonna of Sadness (1973)

Blessed--and at the same time cursed--with the precious but fatal gift of beauty, young peasant Jeanne, falls in love with beautiful villager Jean in Middle Ages France. As the village's foul feudal lord exercises the "Droit du Seigneur" or the "Right of the First Night" on the couple's wedding night, a desperate plunge to a world of disturbing hallucinations eventually leads Jeanne into a damned Faustian bargain with the Prince of Darkness. Thirsting for power and sweet retribution, Jeanne gradually transforms into an omnipotent, destructive vessel of seduction as her newly-acquired powers go hand-in-hand with the blackest of witchcraft. What is the limit of Jeanne's hatred?