I was wondering if you draw a card fr the first time and u can't do the action and you have nothing in your discard pile what do you do .. The rules say you have to do a or b play or pick up discards ?
I believe you are referring to a different game, Eminent Domain: Microcosm.
In Microcosm, you either 2a. Play a card, or 2b. Pick up your discards.
You are not prevented from doing 2b. just because there are zero cards in your discard pile. You are allowed to choose 2b. no matter what.
So turn 1 you may take a card from the supply and then choose to pick up your discards rather than play that card - effectively "just keeping it in your hand."