You whisper a haunting series of words in the ear of a creature that can hear you in range. That creature makes a Wisdom saving throw. On a fail, that creature is haunted for the duration. At any time for the duration, as part of casting this spell or as a bonus action on a subsequent turn, you can cause that creature to take 1d10 psychic damage. When you do this, the haunted creature has disadvantage on ability checks until the end of its next turn. When you do this, the creature is no longer haunted. Casting this spell again also ends the haunting for a haunted creature.