As a reaction, which you use when you are hit by an attack, lightning dances around your body.
If the creature who damaged you is within 18 meters it must make a Reflex saving throw as lightning strikes it.
On a failed save, it takes 3d6 lightning damage and it can’t take reactions until the start of its next turn.
On a successful save, a creature takes half as much damage.
You can increase the damage by 4d6 for each additional mana or psi expended.