Sabina lang was the ancient queen of the night witches and with the magic she used she created more night witches but she died due to using to much magic and the queens power went to the daughter of sabina aurelia Lang castaway but it was to much for her to handel and she created the beasts of the night witches and unknown to everyone else some of the magic went inside lucas's mother Sanura and when she was pregnant with lucas the beast magic went into his heart but when he was born he didn't know about the magic yet but that's when the Volturi came and killed the night witches unaware that Lucas was the thing keeping the night witches alive and if he uses his full power he can bring them back

The beasts of night witch:

Lucas in his beast of night witch form: