Brigid

Brigid is the Celtic goddess of art, creation, and healing. She is the creator of a magical diary.

The Book of Brigid
In ancient times, Brigid created a book that could turn a person's imagination into reality. She bestowed this book to humans as a gift, to bring their dreams to life.

Powers

 * Magical book creation: Brigid is presumably a powerful magical being, as she was able to create a book that can turn thoughts into reality.