Inside this poison's container swirls a dark purple liquid, on inspection the viewer can see horrific scenes play out on the fluid's surface.

You can take an action to coat a weapon or piece of ammunition in this poison. When you next use that weapon or piece of ammunition to deal damage to a foe, they must make a DC 16 Constitution saving throw. On a failed save they become poisoned for 24 hours and take 4d8 psychic damage. At the start of each of their turns they must make a DC 12 wisdom saving throw or take this damage again. On a successful wisdom saving throw, the creature overcomes the horrors and purge the hallucinogenic element from their body. On a successful constitution saving throw, the creature takes half damage and is otherwise unaffected.