by ontguy
From quotes from the rules:You can play 1 Expedition card per action: before, during or after your action (the same applies during extra actions).
When can Expedition cards be played? First, we must understand that there are two kinds of Expedition cards:
• Expedition cards that give a bonus: You can play these cards during your action. You play them before, during or after your
chosen action.
• Expedition cards that modify a specific action (with an A in the top corners): You can play these cards when you choose
the specific action.
When can Expedition cards be played? First, we must understand that there are two kinds of Expedition cards:
• Expedition cards that give a bonus: You can play these cards during your action. You play them before, during or after your
chosen action.
• Expedition cards that modify a specific action (with an A in the top corners): You can play these cards when you choose
the specific action.
Important: Using an Expedition card is not an action! Expedition cards may be discarded at any time.
I don't think you have to discard all. I think you can draw a card then discard or play a card and still draw another.