Once upon a time in a land far, far away…
Baron Von Sankt Troffembach invaded with a force of three thousand Mecha. The scouts encountered no resistance at all, and the giant Titan robots and their support mechs gathered in one massive, terrifying force at the Grey Forest in preparation to rolling into Kapfenberg.
The desperate Mayor summoned the Witch Queen, Marta Esmeralda, for aid.
At sunrise, a fog of greenish-blue arose from the ancient swamp and the invading force began corroding, quickly enough to be visible. Marta’s version of WMD was a cloud of 2,2-pyridinium dipyridyldisulfide chlorochromate, a corrosive agent which violently attacked and dissolved the giant mecha completely.
You can see all that’s left. The toxic blue fog cloud that never retreats and the rusty water marking the graves of hundreds of members of the invading force.
The war was over, but dispersion, stray winds and groundwater seepage returned Kapfenberg to the Bronze Age.
Inspired by this week’s Monday Finish the Story prompt: