Final Discovery
Following the Blight Backward
Corven's deepest work is not a cure. It is a method of comparison. He discovered that infernal growths retain tiny chemical signatures from the stock, reagents, soil, stone dust, preservatives, and environmental contaminants present where they were propagated.
A neutralized specimen can therefore be compared against known samples. The result cannot name its creator or produce a magical arrow pointing toward a location, but it can establish that two specimens came from the same cultivated stock or identify unusual traces associated with a particular preparation site.
Later, after the party acquires a neutralized Infernal Seedling, Blightroot, Blight Crown, or comparable specimen, Corven's method can reveal an additional investigative lead toward a Golden Hand staging site.
The strongest use is an earlier lead toward the operation associated with the Pulgari Estate. Without the kit, the campaign reaches that material through its normal clues.