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1) Is it possible to avoid repeating the same castle in a battle against one of the coalition members, rather than avoiding it altogether?
2) How should the castle selection be conducted? (Hidden through a third party or by drawing lots?)
3) Is it possible to balance the castle selection chances with a system like this:
1 - Player)) Castle
2 - Player)) Castle
1 - Player)) Template
So, Player 2 would choose a castle that is advantageous for them against their opponent, and then the opponent would choose the battlefield =).