Kokuyōgan Zenmetsu

Obsidian Annihilation, Kaiza's most destructive technique, is capable of obliterating an area 10 kilometers in radius in an instant. Born of the Armor of Thunder and Lightning, it's composition consists of 70/30 ratio of Black Lightning and Rhythm Release. Even an entire village will cease to exist beneath its hellish fury.

Background
Kaiza created this technique after repeatedly witnessing with his Rengetsugan the formation of bijuudama during the 4th Shinobi World War. He learned that by saturating his jutsu with a dark chakra he could combine two dissimilar chakras using his will as a binding agent.

Execution
First Kaiza dons the Armor of Thunder and Lightning. He then releases his chakra at tailed beast levels, thus charging his armor to its maximum potential. At this point, he fires a stream of Black Lightning bound to Rhythm Release up into the ionosphere. The stream ricochets off the ionosphere, allowing Kaiza to target any geographic region within his visual range.

Effects
Obsidian Annihilation takes its name from the color and effects of the jutsu strike. Upon contact the jutsu vaporizes and disassociates the molecular structure of all matter. The Ritsuton raises the vibration of the Black Lightning to the level of phonon oscillation of electrons, drastically elevating its destructive potential. Matter is not only vaporized on contact, but broken down to its constituent elements. Due to the bound presence of Ritsuton chakra this technique remains immune to the Wind Style counterattacks.

Caveats
As this is a rather chakra taxing technique, Kaiza is reduced momentarily to a weakened state incapable of utilizing ninjutsu. At this point he is at his most vulnerable as he is unable to use his internal alchemy. His taijutsu and genjutsu does not suffer from these effects and he will quickly regain his abilities. At present he remains capable of performing this technique several times a day, at which point his stamina will become depleted.