Originally, the Darkhold was formed of spells constructed by Chthon and his worshippers. However, the book and the castle it belongs to were primarily created due to the prophecy of the Scarlet Witch.

Scarlet Witch #3 by Steve Orlando, Russel Dauterman and Jacopo Camagni sees the aftermath of Wanda Maximoff's death and the destruction of her quaint new hometown of Lotkill, New York.