Objectives
Stab a Devilsaur with the Devilsaur Barb. Return to Torwa Pathfinder in Un'Goro Crater when you have completed this task.
Provided: 
Devilsaur Barb
Description
The toxin you helped me create is for a special purpose. The great devilsaurs of the crater make it dangerous to hunt and difficult for me to survive. Even if I possessed the necessary strength, killing a devilsaur simply allows another to move into its territory.
Take this poisoned barb and stab it deep into a living devilsaur. The toxin should pacify the creature, though I do not know how quickly...
Progress
Were you able to pacify the great beast?
Completion
Thank you, adventurer. You are brave and wise.
Tell me, how did the devilsaur react to the toxin?