Who decides about sequence when cards are discarded?

For example, claim =2 and I need to discard two random cards. Who decides which card will be on top of discard pile?

(I know that this concern can be easily resolved by method of drawing itself, but I'm curious if there are rules for that)

Similar problem:

Valar Morghulis kills my 3 characters: A, B and Benjen .

Can I choose order of actions like this?

a) dead pile with A and B are shuffled back into deck, then Benjen is placed in dead pile, because I chose him as last one

or not?

b) dead pile is shuffled back into deck, then A, B and Benjen are placed in dead pile, because they were killed at the same time

And one more similar:

Let's say plot allows players to take location from deck. Can first player force me to show him my choice first (before his choice)?

Or we choose them and then reveal them simultaneously?

Lots of issues here:

Rogue30 said:

If two or more cards are discarded from your hand by the same effect, the owner of the cards decides the order in which they hit the discard pile. Once cards are in the discard pile, the order cannot be changed.

If one effect discards two or more cards from your deck, they go into the discard pile in the order that they left the deck.

If one effect discards, kills or otherwise removes more than one card from play, the owner of the card decides the order in which they hit the discard pile, dead pile or whatever.

Rogue30 said:

B is the correct answer. Remember that when a card leaves play, it goes into the Moribund state until the end of the action window. So every character killed at the same time as Benjen is moribund and still on the table when you use his ability. They have not been physically moved to the dead pile yet. After you use Benjen's effect and they all go to the dead pile, the owner of the cards choose the order in which they go there.

Rogue30 said:

Actually, when a card (plot or otherwise) has more than one player choose a target, reveal a card, whatever - the controller of the effect must do the choosing/revealing/whatever first. The First Player has no prerogative here. So with the plot you mention (Building Season), the person who reveals it must show their location first. Similarly, the person who reveals Wildfire must indicate which three characters they are choosing first, then clockwise, after which, all the other characters die at the same time.

ktom said:

Many thanks for all answers.

This one above is not intuitive. Can you please point me to rules paragraph? I only found this:

"When revealed" plot effects are essentially self-referential passive effects that initiate in response to the revealing of the plot card with the "when revealed" effect. They are resolved (in the order determined by the first player

Rogue30 said:

Note that this doesn't actually apply to anything in this scenario. The First Player decides on the order of resolution when two different passives conflict. In this scenario, there is only one passive effect. There is only one effect initiating and resolving. Since there is only one effect, there is no conflict for the First Player to resolve.

The "controller of the effect goes first" is a convention and general ruling from FFG that created a precedent. The best place to see it written down is under the entry for the card "Archery Contest" in the Legacy FAQ (Archery Contest is from the set "A Tourney of Swords").