From Introduction:
Even before King Geddorah’s armies had breached the walls around Ardoussarlis, they had begun polluting the land with noxious alchemicals. Their siege engines bombarded it day and night with acidic fluids and explosive powders, even turning to cursed refuse, experimental drugs, and volatile mutagens before the end. But these were as nothing to the alchemical pollution unleashed upon the earth when the city’s arcane workshops were looted and burned.
The Sakhab Wastes are grey and rocky, mostly devoid of plant life. Standing in stark contrast, the city at the heart of this wasteland is bursting with greenery. It is not the bounty some might expect, however, for not all of these plants are waiting, passively, to be eaten. Some have mutated, becoming more like animals — malevolent, carnivorous, and deadly. The most dangerous is the bubblehorn flower and its caustic vines. Though not a flesh-eater, this plant is nonetheless a murderous threat to animal life. Even worse, it is a plant that, by its very nature, samples the alchemical detritus of the earth and produces yet more of these dangerous substances. As if this city were not already polluted enough.
This plant begins with poison roots. Are they a small man or a large mandrake root? They are certainly mobile enough, running and sneaking in search of suitable soil. Once a place is found, it buried itself and sprouts a set of caustic vines and, eventually, a bubblehorn flower. If this flower or its vines are killed, the roots become active again, to seek out a new place to grow. For this very reason, this weed is impossible to get rid of.