Dark Release: Vortex of Wind is a Dark Release technique created by Shikyo Fushiawase, combining protions of his Wind Relese Chakra in with it, as well.
Upon activation, a black hole will open up in the palm of Shikyo's hand, (he can use either one, or both, of his hands to use this technique), which will have purple wind swirling around it and exiting it at rapid speed. The first, and primary, ability of this technique allows Shikyo to suck anything and anyone inside of it that he wishes to. This includes any person regardless of size, weight, or mass, any Jutsu regardless of power, any physical weapons, and any inanimate objects. They'll be sent into an endless vortex of darkness and quickly destroyed, with no possibly of recovering them, ever. Everything that's sucked inside will be fed to Shikyo's own Chakra, making him even stronger yet; it's because of this technique that some claim that his Chakra is "forever growing." The other ability, which is noticeably less powerful than the first ability, is that he can send a huge outburst of purplish wind toward the enemy, sending them flying back, and possibly even cutting or shredding them to bits, depending on how much of his own Chakra that he puts into it.