MarsBot's Action Deck

Each generation MarsBot gets a 4-card action deck: 3 project cards plus 1 card from its bonus deck, shuffled, and it never pays for them. Without drafting, you draw 4 cards as usual and MarsBot takes 3 from the project deck. With drafting, draw two piles of 4: you pick 1 card to keep from yours while MarsBot keeps 1 at random from its pile, swap and repeat until you each have 4; then shuffle MarsBot's 4, discard 1, and shuffle in its bonus card. When its bonus deck is empty, shuffle its bonus discard pile (destroyed bonus cards stay out of the game). From generation 2 the first player marker alternates between you and MarsBot.