(making things up now, don't remember the details but that should give you an idea)
Second wave Turn 2, unit B places 5 turns special skill block on your team.
You need to counter that, but you end up with very few alternatives. Again, made up, but you could have Nami V1 that only removes 4 turns of block, Usoop v3 that could remove 5 but his special requires to many turns to charge to be available at that point so you are left with only Max Rarity Sanji as a viable alternative.