This small glass philtre contains a bright blue fluid. When consumed by an individual suffering from the effects of an insanity, he becomes briefly lucid.[1a]
Trivia[]
It is unclear if the titular Esmeralda is in reference of the Halflinggoddess of same name, the inventor, or both.
Sources[]
1: Warhammer Fantasy Roleplay 2nd Edition -- Old World Armoury (RPG)