Sage Art: Steel Release: Unlimited Armor

This versatile technique forms the core of Kaze's (serious) fighting style. While in Sage Mode his Steel Release abilities become enhanced to the point that he can convert the entirety of his body into metal.

This, of course, provides obvious advantages over merely transforming the skin (such as with Earth Release: Earth Spear) as the user becomes essentially immune to blunt force trauma in addition to cutting and stabbing attacks. That is not the sole use, however. To a master of the Kekkei Genkai, like Kaze, the metal that makes up his form can be altered in any conceivable fashion. Hardness, density, luster, conductivity of heat or electricity, and more, can all be lowered or raised. His form can even be changed from solid to liquid metal, and back again.

However, since it requires concentration to apply the changes it is not possible to apply all of them at any given time. In fact, no more than two may be combined. Thus it is not possible to become immune to all forms of damage at the same time.