For those rare occasions where you get a board like this
I had no idea something like this was even possible. No yellow shields at all on the starting board.
For those rare occasions where you get a board like this
The mulligan is called the “flee” button and you rematch if you want. I’m assuming it’s a raid and not a war attack.
It’s Zulag!!! I would dump tiles into her like nobody’s business, and think that I still had a fair chance of winning. Making the match of 3 purples in the middle will also clear 3 greens in the middle and possibly start up a cascade that brings in yellow tiles.
Alternatively - and a better long-term solution - move off mono!
Bingo! Every board is a good board with rainbow sprinkles!