Raiton! Byakurai Mahou! - Vaporizes trees and explodes a hun

But Setsuna was not done, oh no. Landing on her feet with no problems, she assumed a horse stance and gathered her might into a white ball of concentrated lightning chakra. Naruto did not need a doujutsu to tell that whatever was coming would be huge.
"Mistress, wai-"
"Raiton! Byakurai Mahou!"
It was precisely as the name described it: a demonic cannon of white lightning. Wide as Setsuna was tall, the massive lightning bolt vaporized the trees in its path until it exploded in a beautiful display of gargantuan white and gold sparks about a hundred yards away. In an instant, the thrilling scent of ozone filled the air, and a wave of wind and dust swallowed student and teacher altogether.
"Oh man, the ANBU are gonna have a field day with this."