# [[Ineffable hauntings]] A book we found in [[025_20221105 The Lurker in Light#^8daf2b]], in [[The Gauntlight#Book Key Room]]. It contains: - the formula for *Create undead* ritual to create poltergeists. - academic analysis of *Ghostly weapon* spell. Lets you attack ghosts. 1 day to retrain a 3rd level arcane or occult spell and then you can cast it.