In our swashbuckling pirates game last Wednesday, the crew was attempting to salvage a shipwreck and were somewhat startled to discover a huge sea serpent had taken up residence in the hulk.  During the fight, Bubonic Bart jammed his arm into the beast's gaping maw in order to stab upward through the mouth into the thing's brain.  He struck a fatal blow, but his upper arm was savaged by the creature's poisonous fangs.  I didn't really have a particular effect in mind for the poison, but I knew I wanted it to be something significant.  He liked the idea enough to say he wanted a Key to go with it.  Here's what I came up with:

Key of the Cursed
You have been condemned to a terrible fate and now your doom dogs your
heels, affecting everything you do.  It may be a hex, the evil eye, a
disease, lingering poison, a wound that just won't heal, but whatever
it is, it's a constant problem for you.  You gain 1XP when you have to
overcome your curse to do something.  Gain 2XP when your affliction
prevents you from doing something important to you.  5XP when being
cursed puts you into a life-threatening situation.
Buyoff:  Find a way to have the curse removed.  Alternately, succumb to your fate.

I think that rocks :)

I tried, but I cant think of a better way of doing it.

Awesome. This one is gonna get added to our list.

Hey, :)

Yeah, you should add this to the wiki. :)

Cheers,
J.