Aqua Shadow Dendrobium is a problem for everyone. You absolulty need negate damages but even with that, you need girls with Guts and enough nuke power to push her to her guts wall before your whole team die. And send a second one to finish the job. And have two teams strong enough to beat Black Baccara.

For Negate damages, I agree Apricot and Harbantus. But when you need one, any girl is a good one.

I agree too for 1.28-1.36x skill act girls. Lilac is nice too with only 20% crit rate & 15% crit damages but 50% chance of react (and she is a 4*).