Cloaked

This story follows the adventures of Kassidy, Ava, and Freya, Kassidy and Ava's lives were semi-normal at first but one day they woke up and everything had changed, first kidnapped then told that they are the two of the most powerful witches known to the witchcraft kind, and now that they know this they will also soon realize that even the most powerful witches can face great danger.

Freya being the third "sister" explains what she can but she too doesn't understand everything.