Dread Word

You speak a dread word so foul that it tears at the very soul of anyone who hears it. One creature of your choice within range that can hear you must make a Wisdom saving throw. On a failed save, the creature is stunned until the end of its next turn and its Charisma score becomes 1 for the duration. At the end of each of its turns, a creature can repeat the saving throw, restoring its Charisma score to normal on a successful save.

If a creature fails all saving throws for the full duration of the spell, it dies.