Uses lightning to coat her legs and make her attacks stronge

"Oh my fucking God!" Naruto screamed even as he dodged. Setsuna's legs were coated in lightning!
A wide arc of lightning moved with Setsuna's right leg, smashing the solid ground with the force of a giant hammer, blowing fragments of rock everywhere.

...

Lightning crackled on the tip of her foot, granting her attack unparalleled piercing power.