Schneiden Welt

Schneiden Welt (shunaiden wōto; German for "Cutting World") was a technique that was speculated to have acted as a catalyst of the shinigami's extermination of the Quincy lines. Despite it having never been actually tested, rumors of its existence had hung about for ages.

Use
Schneiden Welt, like the technique, required  to set the boundaries of the technique,  tubes to cast the technique, and constant channeling of reiryoku to the seele schneiders from the environment. When accomplished Schneiden Welt will create a vortex like that of a black hole: sucking all spirits into its center. Not only does the technique capture even the fastest spiritual beings, due to its unlimited potential of power, it tears apart those caught within the middle of Schneiden Welt into their individual particles.

This technique was never used, though theorized to be highly destructive to anyone who was not a spiritual being.