I'm brand new to the game and was wondering if I can always pay a credit cost by expending cards from my captain's deck.
So:
1) During the adventure phase, for a cost of

2) Some cards have a reaction timing symbol requiring the payment of credits - can I pay the cost using the captain's deck, regardless of what phase of the game I'm in?
3) Some complications require the acting captain to pay a credit cost - again, can I pay for this using the captain's deck?
Many thanks!