Expect updates on this post tomorrow. I ran out of time when I got back here.
Then you thought to yourself, what if these are travelers? They might not know who you are anyways. So you casually walk up to them and fill up the Knight's glass with your poisoned water. The Wizard does not have a glass so you pour the rest of the poison into the Knight's.
You now have an empty flask, might be cool to store Ted in there. With the rest of the water goes into Ted's pot. The pot of water is now empty. You don't notice anything particulary chaging, but you think that he has more stamina now.