I had an idea about negotiating future consequence and enforcing future consequences.

Lets say, during negotiation I agree to have my character do something in the future instead of taking dice damage.
Later, I totally betray that negotiate agreement. I have my character do that thing I said I they wouldn't do. Right then, I take the dice damage.

Does this work with the rules?

No!

That's how Poison'd works, roughly. But I would never ever recommend it for the Wicked Age.

-Vincent