Black Wind Flag was a rare spatial type Divine Spirit Treasure.[1] [2]
It can block attacks that don't have the power to tear through space. It is capable of summoning huge tornadoes and storms.[1] [3] It can also create a black hole.[4]
Three Kunwu Masters used it to seal Sacred Ancestor Yuan Cha on Kunwu Mountain.[5] Later, Devil Ancestor Yuan Cha detonated it.[6] Han Li seized its remains.[7]