Dead Silence

Path of Shadows: 3rd level You learn the psychic charge force power, which does not count against your total powers known. Additionally, you can use Wisdom or Charisma as your forcecasting ability for it, and when you hit a creature with the psychic charge force power and the target tries to speak, it takes additional damage equal to your Wisdom or Charisma modifier (your choice, minimum of +1), and its voice does not produce sound until the end of your next turn.