Zalkoré cultivates hallucinogenic plants in these four sheltered gardens. From the plants, she brews a narcotic tincture that allows her to dream of Thiru-taya. Without it, she can’t recall his face. - Tomb of Annihilation

Any character that drinks a dose of the tincture must succeed on a DC 15 Constitution saving throw. Characters who are immune to the poisoned condition succeed automatically. On a failed save, the character begins to experience illusory sights, sounds, smells, and sensations that seem real. Casting a lesser restoration spell or similar magic on the character ends the effect, which otherwise lasts for 1d4 + 4 hours.