The shift isn't banned yet, so hear me out......
First you'll need brave, replaceable, and preferably low paid ballplayers.
While the strategy could be perfectly usable anytime, it should be employed immediately after taking a lead. But instead of all players being sacrificial lambs, you'll actually need to score. Once you have taken a lead....you replace your hitters with the suicide squad.
These brave men who will do anything for a paycheck and victories, will form a wall around the plate, giving the pitcher a small window and where the hitter has an extremely limited view of the pitch if any. Only a lucky, well timed, blind swing will make contact. Totally within the rules as far as I know (if not let me know, I'm very curious).
Now how much $$$ would it take for you to stand a couple of feet in front of Judge or Stanton? :P
Imagine this happening in the bottom of the 9th with men on, and team desperate for a strikeout....it'd be a real do or die moment.