It attacks by touching its opponents; those touched by a dreamless must save vs. Spells or be unable to sleep until the effect is dispelled with a casting of remove curse.

Being unable to sleep does not cause immediate detriment. Spell-casters may still memorize their spells, though it takes twice the normal time, and others are unaffected. That is for the first day; after that 1d20 must be rolled everyday, with the character’s Constitution bonus added and the number of days they have been awake subtracted, with a 1 or less indicating that the character has gone insane due to the sleep deprivation. Such a character may be cured with a casting of remove fear, but in the interim they may try and take their own life.