The Schostri toxin, which is synthesized by the Schostri insect species, was utilized by the Vagaari Empire after they dissolved it in a fluid medium. This created an airborne poison with the ability to melt the delicate tissues of any creature within a 20-meter zone, including the individual deploying it.
The Schostri toxin initially appeared within The Unknown Regions sourcebook in 2010, which was released by Wizards of the Coast for the Star Wars Roleplaying Game.