As an action, you whisper a discordant melody that only one creature of your choice within 18 meters can hear, wracking it with terrible pain. The target must make a Will saving throw. A deafened creature automatically succeeds on the save.
On a failed save, it takes 3d10 psychic damage and must immediately use its reaction, if available, to move as far as its speed allows away from you. The creature doesn’t move into obviously dangerous ground, such as a fire or a pit.
On a successful save, the target takes half as much damage and doesn’t have to move away.
You can increase the damage by 4d10 for each additional mana or psi expended.