Arthur's Extreme Nothingness Authority began as a technique he created in his younger years, born from his desire to erase his target as quickly as possible by reducing it to nothing at extreme speed so that the destruction occurred almost instantly.
That intent was the core of Extreme Nothingness.
As he grew stronger and ascended to the Deity Realm, fragments of his Destruction and Temporal Origin Cores shattered and fused into a new Unique Origin Core that embodied that singular intention.
Under that Unique Authority, he possessed a few techniques, each individually powerful.
There was the default thrusting attack that released a beam from his weapon, Seismic Surge was the wide area version, Chaos was the slash of nothingness that erased its target on a subatomic level, and the most recent addition to his arsenal was World Collapse, a technique Arthur had created purely from his desire to burst planets.
It was that simple desire that gave birth to World Collapse.
