The polluting effect of the Black Grail is the gift of Beelzebub, Lord of the Flies. Spread by the insects bred by his own hand in the Seventh layer of Hell, it is a tidal wave of his foulness in the form of demonic vermin, septicaemia, tainted insects, plague and impurities that pollute both body and soul.
Entire villages and towns are turned into half-living slush that bubbles on the ground, an agony of melted flesh quivering and crying at the multitudinous diseases granted by the Lord of the Flies. Those caught by the Black Grail are still aware of the horrible fate that has befallen them. Specialised units of New Antioch and the Free State of Prussia are dedicated to responding to these outbreaks with heavy flamethrower tanks using holy anointing oil as their fuel.