Medieval Unlimited features a 1 vs. 1 dueling mechanic.
They are a fantastic way of making money and a great way to settle disputes without a full scale war.
You can visit the dueling arena and there you can see the scoreboard with total wins and losses, and admire who is the #1 warrior in the server.
Occasionally players or staff will organize a tourney where you can fight against other players in a small ranked contest with great rewards!
To duel another player, do /duel {player name}. It will send a request which they can then accept or deny.
The winner of a duel gets 100 gold coins, the loser gets nothing.
No, duels use a completely separate inventory than your own by giving you the option to choose one of the many custom kits. Each player in a duel uses the same kit to make it a fair fight.