The flayleaf plant is relatively common, though the mildly euphoric effects of smoking its dried leaves increase when it’s sourced from plants specifically grown to produce such effects.
Saving Throw DC 12 Fortitude; Onset 10 minutes; Maximum Duration 4 hours; Stage 1 +1 item bonus to saving throws against mental effects (1 hour); Stage 2 fatigued and +1 item bonus to saving throws against mental effects (1 hour); Stage 3 fatigued and stupefied 1 (1 hour); Stage 4 fatigued, frightened 2, stupefied 2 (1 hour)