Demonic Ritual of Fertilization

The Demonic Ritual of Fertilization is the name given to the ritual that the Seer performed to be sure that Cole Turner, who at the time was possessed by the essence of the Source of All Evil, could impregnate Phoebe Halliwell to conceive an heir to the Source.

The Ritual
The power of a harvest moon mixed with a special tonic plus the blood of the demon will cause the woman to become fertile to the seed of a demon, and it will counteract any and all preventative measures that the woman has taken. The tonic has to be taken in the morning, and the impregnation has to be done as the moon is high in the night's sky.

Notable Uses

 * The Seer used this potion on Phoebe Halliwell with Cole Turner's blood, in order to guarantee that the child would be evil and not good. This is why the child that Phoebe was pregnant with was so erratic and evil, and possibly why the child never had a chance of being good or evil. The tonic was placed into the form of chocolates, as Cole knew that Phoebe would eat the candy.
 * Piper Halliwell accidentally and unknowingly ingested one of the chocolates meant for Phoebe, however, she did not get pregnant with Cole Turner's baby after ingesting it. This could why her first-born child, Wyatt Halliwell, was good and not evil.

Notes and Trivia

 * Cole had the Seer make the tonic for the ritual in the form of chocolates, which were Phoebe's favorite candy; that way it'd be easier to get her to consume the special tonic.
 * Because Piper had eaten one of the chocolates, some fans speculated that was the reason why Wyatt grew up evil in the dark future; and the reason why it was possible for him to be persuaded to evil in the first place. However, this fact hasn't been proven and is only a theory.
 * The ingredients that were used in the creation of the tonic were never revealed, however, a skull was seen in the cauldron and it requires the blood of the demon who will impregnate the woman.