This rare and exotic flower is a deep purple with yellow gold trim.  When ground into a powder and thrown onto a fire, the person may inhale the smoke to unlock the mysteries of the shadows.
DC 19 Con Save

Success:  The user may cast Pass without Trace at will for the next 12 hours.  

Failure: The user takes 1d12 damage and begins to vomit every 30minutes for the next 6 hrs.  Repeat the Con Save, on a failure the user takes 2d12 damage as they vomit uncontrollably.  3 successful passes and the vomiting stops.  

Either: The same creature cannot make more than one attempted per 7 days, otherwise there is a 50/50 chance of a Poisoning.