Per the cards text:

When attacking, if the defender does not have any focus or evade tokens, you may receive 1 stress token to roll 1 additional attack die.

You cannot use this ability if you have any stress tokens.

So by this statement the extra dice can be added to any attack: primary or secondary, just like Jan Ors?

Yes you can use it on either type of attack.

I did have a situation come up yesterday where someone used opportunist with cluster missiles. We both agreed that you would get a stress after the first 4 dice attack, so you could only do 3 dice on the second attack. But maybe that's wrong?

Cluster Missiles (also Gunner/Luke) are considered two separate attacks. Opportunist couldn't be worked on both of them.
With Gunner/Luke, Expose would count for both, as it increases your primary attack value.

Although I see no reason you couldn't choose to use the extra die on the second of the 2 missile attacks. Not sure there is a reason to wait, but I think you could.

Although I see no reason you couldn't choose to use the extra die on the second of the 2 missile attacks. Not sure there is a reason to wait, but I think you could.

If you're firing at a target with shields, you're typically better off with the stronger attack going second. This gives the first one a chance to remove the shields, thus giving the second a better chance at scoring crits.

Edit: And yes, you can most certainly choose which of the two attacks to apply ANY beneficial effect to, as they are completely separate and independent attacks.

If you're firing at a target with shields, you're typically better off with the stronger attack going second. This gives the first one a chance to remove the shields, thus giving the second a better chance at scoring crits.

True. Knew there had to be one.

What if i have Captain Yorr close by?

Cluster Missile, take my stress for Opportunist, but pass to Yorr instead.

Roll 4 dice on first attack.

Cluster Missile, take my stress for Opportunist, but pass to Yorr instead.

Roll 4 dice on second attack.

Or does the timing not work out that way? Yorr just says, Whenever someone receives the stress, if he has 2 or less he can take it. I'm inclined to think that Yorr makes an "Opportunist" /w Cluster missiles pretty deadly.

Have Jonus closeby, and that's just downright stupid. Granted, that's A LOT of points for a one-trick pony, but that sure is a cool trick.

The way it is phrased, taking the stress on opportunist is a cost, like the stress on soontir fel, which means if Yorr takes the stress then the effect doesn't trigger.

The way it is phrased, taking the stress on opportunist is a cost, like the stress on soontir fel, which means if Yorr takes the stress then the effect doesn't trigger.

Oh yeah, that's right. I want to say i knew that, but i'll blame it on Monday and move on...