Heroin

Heroin is a former brand name and current street name for diamorphine, an alkaloid opiate known for its painkilling properties. It is frequently used as a recreational drug, and since approximately early 1999, has been the recreational drug of choice of Wizards of the Coast, which led to a great number of gaming clusterfucks during that time period, like the Sixth Edition of Magic: The Gathering and 3.0 Edition of Dungeons and Dragons. Since that time, the D&D team has sobered up (3.5e), relapsed (4e), and sobered up again (5e), but the Magic team has just been using more and more and are now a bunch of drooling vegetables.