Spice and Warforged/Monstrous moonshine

A hallucinogenic beverage (which also contains enough alcohol to by highly intoxicating), which inflicts the drinker with prophetic but oddly symmetric visions for at most 48 hours. An overdose can cause mutations, and in extreme cases victims have even turned into grimlocks, hence the name. (In gameplay terms, for each shot one rolls a 1d20. What effect does this have??) Monstrous moonshine is illegal in all territories (selling it is punishable by death in Bradamante, Tyrfing, and District Arakelov, and imprisonment elsewhere) but still very popular at parties, and goes for around 50 gold per shot.