You are a master of Poisons and antidotes.
You can use and prepare poisons for both combat and noncombat use. You can intent new and off effects for your poisons to have. You have delveloped a great sensitivity to poison, and can sense them by their mere presence with a Medicine roll. You can identify any poison, and develop an antitoxin that can be applied by anyone and still use your full skill value for effect - unlike a normal doctor who has to apply the antitoxin himself. Such an antitixin will remain potent for one story. You have delveloped a wide-band toxic resistance, and can use your Medicine skill in place of your constitution when resisting poisons.