Itsuwaza

The Itsuwaza is a technique granted to the Mangekyō Sharingan, of those who have been indulged in The Curse of Hatred. It's one of the shinobi worlds first based Mangekyō techniques.

Usage
By using the spiritual leakage from the Curse of Hatred, surrounding the area in a spiritual increasing barrier, the user can literally seal off his opponents techniques. This can also extend off to, as seen in Sigma's battle with Reikoku. Literally removing his ability to use his Lava Release, for more than thirty minutes. Meaning anyone within the barriers corridor will find all if their techniques useless. However, it appears this method while not chakra costly, foes indeed fatigue them greatly. So to counter it, the user uses their gaze instead.