Fainfol is a magic spell used by witches in Professor Layton vs. Phoenix Wright: Ace Attorney. It is described as an instant sleep spell that causes those who hear its incantation to lose all consciousness the second they hear it.
The spell was first used when Espella Cantabella was running away from the witches when encountering Professor Layton. After Luke lets a dove and the witch uses this opening to enter Layton's study, she used Fainfol to put Espella into a deep sleep to carry her away.
