What I do not understand is how the responses on Infinite characters can be played if they're in the dead pile.
Lost Captain- Response: After you win a power challenge by 4, return Lost Captain from discard/dead pile to your hand.
If you're allowed to use a response of something in a dead pile, could you use Joffrey (PotS) response when he's dead as well?
Joffrey (PotS): Response: After a small council is played, kneel 3 influence to discard 1 character from play (shortened version, sorry copy and paste is not working)
What about the unreleased Maiden of Poisons? Could I use her response when she is already dead?
Maiden of Poisons: Response: After you lose a challenge as the defender, choose a challenge icon. Then each opponent chooses 1 standing character he or she controls with that icon, if able. All chosen characters lose that icon until the end of the phase.