Decapitating Airwaves

Using the air tubes implanted in his arms, Zaku can control air pressure, creating supersonic blasts of air. These blasts are powerful enough to destroy stone, and can also be used to soften the ground.

The downside of this technique is that if the air tubes are clogged, the air that cannot escape would burst out from the sides, which can cause Zaku's arms to be destroyed inside out, to the point of being blown clean off.