Black Sap

This tarry substance harvested from the dark boughs of the death's head willow is a powerful intoxicant. It can be smoked as a concentrate or injected directly into the bloodstream. A creature subjected to a dose of black sap cannot be charmed or frightened for 1d6 hours.

For each dose of black sap consumed, a creature must succeed on a DC 15 Constitution saving throw or become poisoned for 2d4 hours—an effect that is cumulative with multiple doses.