It all starts with the pitching, especially the starters. Cora has said that out loud because it's so obvious.
One presumes Cora will go with some righty bats vs. lefty Happ, who was pretty tough against us last year (until the ALCS). One presumes Beni will rest another day, so my guess is JDM will be back in LF, JBJ in CF, and Mookie in RF. I see Devers at 3B (but it could be Nunez), Bogie at SS, Pedey (or Nunez) at 2B. and Pearce and Moreland at 1b and DH or vice versa. Vazquez catching. So, if Devers sits for Nunez (unlikely), we could see as many as 7 right bats.
But, honestly, I believe the winning card is a700hitter transmitting vital bulletins from enemy territory.