Here is the best build I could make >Sand bender >Scrolls of water and air moves they could use the similar techniques since you can treat sand like a fluid in most cases >Metal bending >Steel dust just to be even more abrasive and blast off any protection. >Lava bending once you put some dust in your enemy eyes heat it up to make their blindness permanent and get a opening for a killing blow.
Metal bending only works because they're bending the rock impurities in the metal, not the actual metal. Bending steel dust wouldn't work, unless the steel it's made from is absolutely chock full of impurities to begin with
The quality doesn't really matter, it just needs to be more abrasive, I included it to make it harder for a earth bender to bent against the user but yeah I see your point
Nicholas Butler
You could have mechas, not just a fucking Eva like they did in Korea but small scale mechanical mechas powered by bending with canons imbedded inside, something strong enough to take out an enemy plane
James Nguyen
You could make a decent anti air weapons with Earth or Water bending lunch disks in to the air and they are basically free ammunition
>Calcium is a mineral >Calcium is in bones It's a stretch but we're dealing with Kung Fu magic anyway. Theoretically an earthbender could telekinetically rip bones out.
Blake Taylor
>Be the Avatar >Go into the Avatar state >Use enhanced bending ability to bend bones though earth bending and blood through water bending >Fuck with the person like a human puppet, before breaking all their bones