I have in hand a card I really want to play next turn, but it gets chosen after I lose a claim 2 intrigue challenge. I still have the plot Regroup without using, can I discard the cards in the order I want to get back the one I need? Does the other player choose? It matters who is first player?

In general, when cards go to your discard pile at the same time as the result of the same effect, you (the owner of the pile) get to decide the order the are placed in the actual pile. It is no different than you getting to choose the order your characters are placed in the dead pile after a 2-claim military challenge.

So yes. You would get to choose the order they are placed in the discard pile.

sorry, but i'm not able to find anything in the FAQ related to this subject. is there something i am missing?

In my opinion this aspect of the game is not well defined by the rules.

matamagos said:

It also follows reasonably from the timing structure. A single effect discards multiple cards. Even though, in practical terms, you might have to choose the cards to be discarded one-at-a-time, the effect resolves only once. Therefore, all cards are considered to be discarded at the same time. This is not an instance of two different effects coming into conflict by trying to be applied at the same time (which would leave the resolution in the hands of the First Player), so the controller gets to determine the disposition of his own cards.

Think of a 2-claim military challenge. When you choose the 2 characters to die, is there an order in which you have to save them? No. You can save them in any order - because there is no particular order to the single kill effect (even though there was a practical order in which you chose your targets). If you don't save them, they both die together when the claim effects are resolved.

It's really no different for a 2-claim intrigue challenge. Technically speaking, you choose the cards (randomly) to be discarded in Step 1, have the opportunity to save them (or cancel the claim) in Step 2, then physically discard them in Step 3. So the cards are discarded together without a particular order by the single discard effect - even though there was a practical order in which you chose the individual cards. Granted, because there are no saves (and only 1 cancel) for intrigue claim, the practical order seems far more definitive in the intrigue challenge, but that doesn't change the underlying timing.

You can accept this as convention, you can look at the specifics of the timing structure, or you can petition FFG for a definitive statement in a future FAQ. The end result, though, is that when multiple cards are discarded (or leave play) at the same time, the controller of those cards determines the order in which they hit the discard (or dead) pile. Of course once there, that order cannot change.