Blight Ichor

This bitter chartreuse concoction is distilled from a fungus native to the Blightshore badlands. The sickly green liqueur harbors potent psychedelic properties. Provided it is neither a construct nor undead, a creature subjected to a dose of blight ichor gains advantage on Intelligence and Wisdom checks, as well as vulnerability to psychic damage, for 1 hour. For each dose of blight ichor consumed, the creature must succeed on a DC 15 Constitution saving throw or become poisoned for 1d6 hours and suffer the effects of a confusion spell for 1 minute. An undead creature subjected to a dose of blight ichor gains advantage on all Dexterity checks and is immune to the frightened condition for 1 hour.