Given cards like this, which state a character gain an ability (nimble in this case), what is the duration. I was under the impression that it was only for a turn, but then I saw a comment on the MOTF discord where someone stated he gains it for the whole game. Is that assertion correct?

Unless otherwise stated, the command card is only in effect until it is discarded, which happens at the end of the turn.

I almost would say that the logic would stand that it would last for the balance of the game... but then I remember cards like "Explosions" where it specifically stays in-play after initial use. With that precedent, I would say once the card is discarded, the ability goes with it.

RRG Page 25:

"Some command cards allow specific units to gain keywords. The specified unit has that keyword as long as the command card is in play."

I should have looked it up first, thanks guys.

15 minutes ago, Cruzer said:

I almost would say that the logic would stand that it would last for the balance of the game... but then I remember cards like "Explosions" where it specifically stays in-play after initial use. With that precedent, I would say once the card is discarded, the ability goes with it.

That"logic would stand" if we didn't have an extensive, well-ordered, free rulebook available online that says otherwise. 🙃

13 minutes ago, arnoldrew said:

That"logic would stand" if we didn't have an extensive, well-ordered, free rulebook available online that says otherwise. 🙃

... kay.

3 hours ago, arnoldrew said:

That"logic would stand" if we didn't have an extensive, well-ordered, free rulebook available online that says otherwise. 🙃

The amount of faith in FFG's Rulebook you carry really makes me think you haven't played X-wing, have you? 🙃