As an action, make a weapon attack with an unarmed strike to cause lethal vibrations in the creature’s body.

On a hit, add the stamina die to the attack’s damage and the creature must succeed on a Fortitude saving throw or it takes necrotic damage equal to the stamina die.

On a critical hit, add twice as much damage.

On a miss by 4 or less, add half as much damage.

Enhance

You can increase the damage for each additional stamina die expended.