Dispholide

Also known as the Priest’s Poison, the Mermaid’s Kiss, the Drowner, or the Green Death. A rare hemotoxic poison, likely of Chantry Choir design and manufacture, that disables the coagulation process and dissolves collagen and even bone at an astonishing rate, effectively liquefying the victim. Derived from ancient serpent venom and refined over eons. "A few grains of dispholide would dissolve a full-grown man. A few more could kill an azhdarch." (Demon in White, Chapter 48)

Symptoms and Detection: It causes rapid bodily disintegration, with symptoms including sweating blood, skin sloughing, organ liquefaction, and intense pain, often leading to death within seconds; detection is challenging due to its nano-scale delivery, often via needle or bloodstream, with blood and tissue melting as primary indicators.

Treatment: No known treatment exists; its swift action leaves only bones, blood, and slurry, rendering medical intervention ineffective.