The foul putrescence of SLAGG vaporized with the essence of fading living matter. Toxic to those who cling to life – even more so to those who deny their own existence.
A gas mask is the only hope to stopping the potential pain of being caught in a hellish cloud of green Gas, but even they sometimes break, and a damaged gasmask may still bleed some gas into the wearer's lungs.
The Mad Mists are the faction with the most gas weapons, they are feared for their callous use of the substance.
Gas is usually deployed on the battlefield via the use of large "Gaslobbers". These large machines are similar to most artillery pieces, positioned far from the lines and installed with protective blast screens on their front face. They fire large cylindrical gas canisters great distances towards the unsuspecting frontlines. They take a team of engineers to operate.
It doesn't interact with everyone's biology in the same way, it in fact has a multitude of potential horrific effects:
Fracture a mind
Vaporize The Lungs
Sear the eyes
Boil the flesh
Melt the hands
Ruin the immune system
Turn a person into gas themselves, they lose their physical form but remain sentient.A