The law of Ninjutsu conservation is in full affect. While the lone shinobi assassin is a deadly predator, a murder of ninja is a simple pushover, even for the greenest of goody-two-shoes. The lightning rips through the Smoking Ones minions like a ditz through a sea of cotton candy, sending many flying (don't worry, they have parachutes) or else crumpled up into a sizzling heap, dazed by the 'Chevalier's' skill with the spear.
Until only one ninja remains.
....
Well $%&!