EVERYONE after interacting with alicorn. DC 19 will save to avoid falling asleep (even if immune to sleep). For those that fail the save: You see a beautiful heavenly landscape. Every direction you look it's perfect (for a good person). (https://www.youtube.com/watch?v=FQC-FTJUrCg)
at 29 to 30 seconds into the song, the horizon changes
All of a sudden, from the horizon, darkness begins spreading across the land (will save dc 23 vs shaken). Eventually the darkness get's closer and closer. At one point you see a dark haired (purple almost black) hollow eyed (has no eyes, yet has red glowing irises where there would normally be irises on natural eyes)(whites are black to the point of nonexistent). He smiles MOST wickedly, then you wake up (dc 35 vs shaken)(if already shaken, now Frightened)