Perfecting the Side Deck

What decks are you going to see at nationals? Let's see what we have.

Plants
Samurai
Plants
Samurai
Fairy
Fish
Plants
Plants
Plants
Fish
Samurai.

So that's basically what you are going to see at nationals, in that order.

So how do we prepare the side deck for these decks?

Firstly, what cards are great against all/most of these decks.

D.D. Crow
is good against plants, fish, and anything reliant on the graveyard.

Maxx C
is great for all matchups especially with hyper librarian running rampant.

Fairy Wind
is important in the samurai matchup, as well as a good card against necrovalley, dimensional fissure, etc.

Malevolent Catastrophe
is good in any matchups not named fish or water tengu synchro.

Thunder King
stops people from searching their deck and negates synchro summons.

Debunk
removes from play cards with effects taht activate in the graveyard or hand. Great tech.]

These are the cards off the top of my head that I will definitely include in my side deck. At this point, the only real thinking is how many of each card I will be using.