"Have you drank the yellow wine?"
Potion, rare, cursed
This insidious wine was created by worshipers of Hastur, the King in Yellow. Popular among bohemians, artists, writers, and other creative types, the cursed wine makes one more susceptible to call of Hastur and fills the drinker with dreams of lost Carcosa. A medium strength alcohol, the Constitution saving throw DC to avoid getting drunk after a mug of this is 15.
Curse: You have disadvantage when making wisdom saving throws for spells cast by worshipers of Hastur.