Dominus Trinus

Dominus Trinus is a spell located in the front of the Book of Shadows, after the title page. Phoebe Halliwell unknowingly cast it, and it unbound the powers of the her, Prudence and Piper, aswell as their collective Power of Three.

Creation
As the spell is located in the very front of the Book of Shadows, it is possible that Melinda Warren wrote it herself, but it is unlikely as she only prophecised the arrival of the Charmed Ones during her execution. It is also possible that Patricia or Penelope Halliwell wrote it for her Prudence, Piper and Phoebe at some point after binding their powers.

Dominus Trinus

 * Hear now the words
 * of the witches,
 * The secrets we hid
 * in the night.
 * The oldest of Gods
 * are invoked here,
 * The great work of
 * Magic is sought.


 * In this night and
 * in this hour,
 * I call upon the
 * Ancient Power.


 * Bring your powers
 * to we sisters three!
 * We want the power!
 * Give us the power!

Trivia

 * The page was seen again in Witch Trial and Valhalley of the Dolls, Part 1, although it was now somewhere in the middle of the Book.
 * This spell and page are an alternate version to a page and spell used in the Unaired Pilot.
 * A scan of this page was included in the official Charmed Magazine.