A very situational card, but in some quest with awful Conditions it can be a real life saver and if you are playing with some sort of ally sward deck its cost it's not to steep, especially since the ally can be an exhausted (and even wounded) one.
Bulwark of the West
Action: Discard an ally you control to choose and discard a Condition attachment.
The Crossings of Poros #137. Leadership.
This is a pretty good card if you have the right target for its action.
I'm thinking in cards like Gandalf or Saruman and that action window at the refresh phase... you can play the Bulwark and remove a nasty card, at no cost, by discarding a card that is going to be discarded anyway. Even better, you can also trigger a Word of Command or A Very Good Tale + Bulwark of the West combo, and maximize the utility of that "leaving play" istari card.
If istari are expensive or that refreshing step is too late for our purposes, we also have several low cost eagles going through some action window, right before we are forced to apply their leaving play effects, in earlier steps of the round.
Having only a few cards in the entire pool for removing condition attachment effects (3 in , 1 in , and this one in , if I'm not wrong1), I believe it is worth to save a few slots for including the Bulwark in our leadership decks.