Vacuum breath.
First form.
Concealment - very hard but useful.
Allow to separate heart beating cycles and suppress own needs in oxygen.
Main goal is compress maximum energy between heart beat cycles.
Second form - Cascade
High intensity of concealment allow to release hiden body potential of energy and create air bending aura that work as viscous layer of air between the body and the surrounding medium.
Third form - oblivion.
That form can be used only after second form . That form allow compress air bending aura around body and direct it in body in dense form. That looks like airflows goes to body but dissolve in 5 cm from skin, but in reality all that air is compressed in very small Flows are directed to the lungs.
When user decided to use activate Final stage of oblivion form he must be ready to die because that form sacrifice all body energy and damage blood circulation and lungs .
It's form is not mobility form that form is preparation and final blow that released when you know that you touch your enemy.
When completed 1st stage of their form (vacuum) and collect large amount of air in small flows that directed in his lungs, he must pierce own lungs by sharp object and in same time push all collected small air flows directly into lungs and use special mental trigger to use hiden potential.
When that happens all veins in lungs begin absorb oxygen in horrific amounts that turn them crimson and oversized , that leads body to ignite all collected body elements to overclock and function.
I in that very moment hearth of user almost not work because it cant hold these amounts of energy and intensity and blood circulate only because of inner pressure from active air aborbtion and materials ignition. When all this shit happens user of attack immediately fall Into almost unconscious condition but with dot of light in eyes and explosive amount of energy that overcharge his body and small vacuum cloack around him he must make one fatal attack that that slise enemy with monstrous speed and strength and microscopically distort everything that blade touched because of very dense air flows that body constantly absorbs until attack not ended.
When user ends his attack his body is in coma and bleeds like fountain until all pressure not leave body.
Final attack with fatal results.
If someone want to imagine how it looks then .
Imagine
Body that suffocating environment for own needs.
And micro airflows that so Intense that when it surround you and your blade.
It pierce everything like micro strings .