To Call a Lost Witch

If you want to summon a lost witch, follows these instructions.

Instructions
Put following Ingredients in a Silver Mortar



a sprig of cypress A yarrow root
 * A pinch of rosemary

Grind with a pestle while Chanting:

course unseen across the skies come to us who call you near Come to us and settle here
 * Power of the witches rise

Spill the blood of the Caller into the Mortar and continue Chanting:

"Blood to blood, return to Me"
 * "Blood to blood, I summon Thee

On the Show
Piper tried to use this to bring back Prue, but it failed and instead brought Paige to them.

The Sourcebook
The instructions can be found in the The Sourcebook.