Through the Coming Storm

A BBC Merlin fan fiction about a girl named Caerwyn, a Druid slave who is bought by the mighty King Arthur. Around her neck is a collar that nullifies her magic and should make her normal, but due to decades of hunting magic, she is still deeply mistrusted. However, the King's half sister, Morgana (a witch) has teamed up with the young warlock Mordred in a ploy to free the magical people from the fear of death. When it comes to a battle between Morgana and Arthur, which side will she choose? The man who freed her but mistrusts her, or the woman who will truly set her free and give her back her magic?