Originally Posted by
Xuvial
Meh, teaching someone to bend blood would be the same as just teaching them waterbending. A bloodbender is merely a waterbender who has become powerful enough to control the water locked within other stuff, exactly like an earthbender who can become powerful enough to bend the impurities (i.e. earth) locked within metals.
Someone has asked earlier what is the "elite" airbending form and a couple of theories popped up including making vacuums and controlling sound. Since we have only seen 2 actual master airbenders (Aang and Tenzin), it's really hard to say what a master airbender can do that a regula airbender cannot. Simply more tricks like bigger air scooters?
For water and earth, the elite level both involves controlling smaller amounts of it spread out through other materials/objects. For Fire...well, lightning has absolutely nothing to do with fire. Iroh's lightning lesson didn't even REMOTELY explain how or why a firebender posesses the ability to seperate yin and yang energies. So airbending's elite form may have nothing to do with air.