Talk with the Plague Doctor Master at Istora Ruins.
Objective: Talk with the Plague Doctor Master
Progress
The Plague Doctor told you that in order to cure the detrimental effects or use them, you should understand the effects well. Experience Poison at Coastal Fortress and Sleep at Dingofasil District.
Objective: Experience Poison and Sleep
End
You've gained enough experience on Poison and Sleep. Return to the Plague Doctor Master.
