We are be going to use FE Format for war.
Okay basically FE format goes like this:
Duelist 1 vs. Duelist A (Duelist 1 wins)
Duelist 1 vs. Duelist B (Duelist 1 wins)
Duelist 1 vs. Duelist C (Duelist C wins)
Duelist 2 vs. Duelist C (Duelist C wins)
Duelist 3 vs. Duelist C (Duelist C wins)
Duelist 4 vs. Duelist C (Duelist 4 wins)

Example:
Shadow vs. Yugi (Shadow Wins)
So Shadow goes on to the next dueler.
Shadow vs. Kaiba (Shadow Wins)
He Keeps going until he eliminates the whole team or he gets eliminated.
Shadow vs. Pegasus (Pegasus wins)
Now Pegasus gose to the next dueler.

Deck Banned List:
No LS, GB, BW, Burn, Mill, Destiny Board, Final Count Down
No OTF/FTK

Card Banned List:
No Judment Dragon
No Neo Spacian
No Banned cards

You can only use up to 2 monsters from the banned decks.