A threnody is a series of words used to banish spirits to the outer darkness. It is a kind of spell.
Description[]
The threnody compels spirits to die completely, sending them to a realm beyond the reach of voyants. Banishment requires knowledge of the spirit's name, but chanting the rest of the threnody will still weaken and distract a spirit to the point that they may not be able to defend their "host" voyant. To conduct a threnody, a clairvoyant must adhere to the following: "[Name of spirit], be gone into the æther. All is settled. All debts are paid. You need not dwell among the living now. Good-bye." Paige Mahoney speaks the threnody for Sebastian Pearce's spirit before escaping Sheol I. She also speaks the threnody for William Linwood on the Underground. If no one speaks the threnody when a person dies, their spirit will haunt their place of death forever.