I noticed this booster today (far right), never seen it before! I haven't used it yet but my guess is it clears the grass one time (ex: if three leaves, takes it down to two)? Anyone know?
Ah well, what's interesting is that I just played a level that doesn't have grass and I still had that booster available to pick! Lol. So now I really don't know what it does, but I guess I'll wait til more info comes out! Don't want to use one and waste it lol.
Oh wow, you got lucky and got to test a Shuffle booster that the studio is currently testing. It shuffles the board, so that is why you see it even if you don't have grass on the level.