Let's Flood Duel Academy!

A tsunami will hit Duel Academy and fishmen and mermaids invade. The tsunami will cause any duel in Duel Academy to have the field spell "untitled" at the start of the duel which will have the effect:
"This card cannot be destroyed by card effects. All face-up non-water attribute monster on the field are destroyed during each player's end phase. This card's name is also "Umi". This card is banished when removed from the field."

The rulings:
-This card can be replaced by another field spell and when it does, it is banished instead of going to the graveyard.
-Monsters not able to be destroyed by card effects such as Red Nova Dragon, will not be destroyed by this card regardless of whichever is on the field first.
-This card does not target.

These fishmen and mermaids will abduct all characters that use water attribute decks(including player characters) and set up several pillars to keep pumping in water into Duel Academy. Our characters will try and save them while trying to destroy the pillars. These pillars will not be automatically destroyed by beating the person in charge of the pillar. You hit it with something to destroy it. You can throw a rock at the pillar and completely avoid having to duel but if the person in charge decides to catch it, you might have to duel him.

Everyone(Or most of us) is in charge of at least one pillar. While one or more people will be in charge of the captured duelists. If you have any ideas to change this in anyway(Improve or degrade anything, I don't care), just post below.

For this duel, You can proxy the "untitled" card in your duels for this arc, but you must say which one is the proxy at the beginning so we all know which one it is. And you can have 3 of them because the one that exists on the field already doesn't count as part of your deck.

what if you use a dark deck what happen then

Then those dark monsters will be destroyed during the end phase. It's meant to allow the bad guys to have a chance of winning against meta decks.

So what you say is peoples with water and dark decks is screw in the start right

No, I said all non-water attribute monsters are destroyed. Water monsters are the only ones not screwed. And if you place a new field spell, the untitled's effect is gone forever.

you know that cool and mess up at the sametime