Sky Sand Protective Wall
(Kūsa Bōheki)
This technique requires a massive amount of sand to preform.
This technique allows the user to gather sand in the air above their target and compress it to the point that almost nothing will be able to damage whatever it is protecting. This technique can be made so large that it can protect and entire village from attack. However, because of how much sand is required, and how much it must be compressed, the user will spend a lot of chakra on this.