Any potion peddler or fraudulent alchemist selling miracle tonics across the Mortal Realms is in for a terrible fate once their soul is claimed by Nagash. His cruel justice transforms them into a Lord Vitriolic, their lackadaisical approach to medicine twisted into an obsessive desire to alchemise. Often choosing a precise elixir to cripple a particular foe, or simply throwing whatever they have at hand in a flurry of spectral arms, their concoctions and tinctures are soul-withering and armour-corroding.