Zwein Vortexes were akin to violent twisters that occurred in the great void.
As it were, Void's body was far from regular and linear, but that didn't mean that any irregularities on it could be understood in the same way living beings did when they observed two or three-dimensional matter. As Void's body was a phenomenon as complex as the higher dimensions only powerful Deities could traverse, every irregularity about it – steep slopes, adverse pressure, high temperature – created cataclysmic disasters in the wider reality. Zwein Vortexes were one such disaster.
A mixture of abnormal temperatures, high or low, and fluctuating pressure acting on Void's body created these massive, spinning gusts with a frightening capacity to pull and push. While they weren't nearly as dangerous as Retucents, they were a threat to those without reliable flying vessels.
