Quote Originally Posted by Edax View Post
Gassing the capital may entirely be a viable option. I don't know what the range is of Black Rose but it could conceivably just be a single canister in one room in the palace that would be enough to stop Zenos.
Except as was shown, one canister was all it took for Black Rose to go out of the Empire's control. A substance that essentially destroys Aether (which the entire world is formed from) would be uncontrollable and wouldn't be able to be gotten rid of by normal means. Normal gas? Enough of a breeze or wind would dissipate it. But something that destroys Aether, would not be fazed by wind, because IT WOULD DESTROY THE WIND ITSELF.