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I was right! metal can be bended, Earthbenders just wer'nt trying hard enough. This is a great thing now Earthbenders have an edge. Well I would like to hear your thoughts on this development.

Oh and maybe this could be a high up level abillity for Earth benders?

Yah I agree, though it was very camedic, pues (but, for you non spanish speakers) it was pretty comical though. There also wouldn't be time for the big show down in the second half if they did that. It also showed the supremasy of Toph. Now imagine what will happen if other Earthbenders learn this, they tuch fire nation army, well see some meudilated corpses.

If I could just add a little something to this conversation, water isn't left out of this little loop here. Earth can bend metal, fire can generate lightning, water can create ice. The only one who I see left alone here is air. All of that is just my opinion though. ^^;

I apologize for the necroposte, but I have to throw my two cents in on this.

Conceivably, if Air gets Sound as its sub-discipline, sonic booms could be resultant. However, this is something I'd expect only to see from a trained Air Avatar. The sheer amount of energy produced by breaking the sound barrier at Mach 1 is amazing, far above anything a bender could put into it.

The speed of which is needed is at least 750mph, I might add, which is the general speed of Mach 1. Obviously there are other levels to this, but I can't see any human producing energy past that, Avatar or not.

Air seems to be it's own sub ability. The sheer flexibility of it's technique, Flying Increased running speeds, even as seen when Aang fought Boomie, Tornadoes os enough to compinsate for the lack of a sub skill.

Actually, I don't think metal bending is available to all earth benders, but merely just Toph. If anything metal bending is a bending element all in its own, just like how a fire bender can't bend water. Earth and metal are two different elements, therefor, they cannot both be done by one person. I think it may be just be because of Toph's situation, you know, her eyes. There is no doubt that the two elements are alike, maybe Toph just saw the line that stands between the two and crossed it. It could possibly be that she is the only earth bender that will be able to bend metal. Or perhaps, one of the few who can. I'm not quite sure if even the avatar can bend metal or sand, things like that. I think he may only be able to control the 4 main elements. No the other elements that aren't as powerful. So, in a way, metal bending for earth benders could be like lightning bending for fire benders. Only a select few can harness its power. Either way, I don't think every earthbender will be able to use metalbending. But that is just my thoughts.

No healing seems like a pretty standard technique. Remeber the North pole
Men=Fighting techs
Women=Healing techs

Be glad I dont go into a whole rant over that.

It's called research, do it some time. Healing is the sub of water, as metal is the sub of earth, and lightning is the sub of fire.

There are probably only a few people in the guild that know more about the bending than I do.