the details of this rules
301.5. Casting Commanders
301.5a Players can only cast the same commander from their command zones after choosing which one they cast for the first time during each game. This is a change from previous rules defined in section 903.8 of the Magic The Gathering Comprehensive Rules.
301.5b There is no such choice to be announced by a player prior the first cast of one of their commanders.
301.5c During a game, once a player has cast one of their commanders from their command zone, the other ones, if any, can’t be cast from this command zone.
301.5d The other commanders in that player's command zone are still subject to the rules defined in section 903.9 of the Magic The Gathering Comprehensive Rules and can be cast from anywhere else.
[ ] Secondly, the duel commander mode allows for Swapping Commanders to replace the role of sideboard in other competitive competitions. The following are the details of this change:
https://www.mtgdc.info/comprehensive-rules#h.tfvic94pz4ge
the details of this rules
508. Swapping Commanders
508.1. Commander Swapping
508.1a Players are allowed to swap commander(s) after each game of the same round. Commander swapping means that only after the first game is played each round, each player may shuffle their commander(s) into their decks and present either the same one(s) or new commander(s) from the same deck before each following game begins during each round.
508.1b For the first game each round, each player puts their commander(s) from their deck face up into the command zone before shuffling (see Magic The Gathering Comprehensive Rules at section 103.1).
508.1c After the first game each round, each player reveals their commander(s) simultaneously by putting them willingly face up in the command zone after making choices, or by putting them face down in the command zone, then having both players turning them face up at the same time before shuffling (see Magic The Gathering Comprehensive Rules at section 101.4). This action can only be done once per game, for each game of a round after the first one.
508.1d Commanders must remain legal before each game begins. Players can’t change color identity in between games (see Magic The Gathering Comprehensive Rules at section 903.4a), and the choice of commander(s) has to follow other construction rules defined in section 403. of this document (for example: players can’t choose a banned commander).
508.1e Only commanders that are part of the original deck are legal. If the tournament uses registration deck lists, the commanders must be listed within the deck.
508.1f Players are expected to take a decent and short time to choose commanders in between games then refer to rule 301.4 in this document.
508.1g Players may change the number of commanders by swapping commanders altering the number of commanders in their command zone and library or not (see Magic The Gathering Comprehensive Rules at section 702.).
508.1h Each restarted game or subgame is a subpart of the current round game. Therefore, players can’t swap commanders neither for restarted games nor for subgames. If a restarted or subgame would start, all players use the same commander(s) than the current one(s) from the main game that generated a game restart or a subgame (see Magic The Gathering Comprehensive Rules at section 723.).
[X] Finally, the latest ban and restriction table in the Duel Commander mode cannot correspond to the ones built into xmage.
The following are the details of this table:
https://www.mtgdc.info/banned-restricted
Duel Commander is a very charming mode, and I hope more people can experience the joy of this mode. But I don't know how to write programs, so I can only post a few major bugs that I have discovered here. Thank you to the creators of xmage for bringing us such excellent unofficial software.
My English is not very good. If there is any difficulty in understanding the issues I have reported above, please leave a message below.
Currently, there are three main bug in Xmage's Duel Commander mode.
the details of this rules
301.5. Casting Commanders 301.5a Players can only cast the same commander from their command zones after choosing which one they cast for the first time during each game. This is a change from previous rules defined in section 903.8 of the Magic The Gathering Comprehensive Rules. 301.5b There is no such choice to be announced by a player prior the first cast of one of their commanders. 301.5c During a game, once a player has cast one of their commanders from their command zone, the other ones, if any, can’t be cast from this command zone. 301.5d The other commanders in that player's command zone are still subject to the rules defined in section 903.9 of the Magic The Gathering Comprehensive Rules and can be cast from anywhere else.the details of this rules
508. Swapping Commanders 508.1. Commander Swapping 508.1a Players are allowed to swap commander(s) after each game of the same round. Commander swapping means that only after the first game is played each round, each player may shuffle their commander(s) into their decks and present either the same one(s) or new commander(s) from the same deck before each following game begins during each round. 508.1b For the first game each round, each player puts their commander(s) from their deck face up into the command zone before shuffling (see Magic The Gathering Comprehensive Rules at section 103.1). 508.1c After the first game each round, each player reveals their commander(s) simultaneously by putting them willingly face up in the command zone after making choices, or by putting them face down in the command zone, then having both players turning them face up at the same time before shuffling (see Magic The Gathering Comprehensive Rules at section 101.4). This action can only be done once per game, for each game of a round after the first one. 508.1d Commanders must remain legal before each game begins. Players can’t change color identity in between games (see Magic The Gathering Comprehensive Rules at section 903.4a), and the choice of commander(s) has to follow other construction rules defined in section 403. of this document (for example: players can’t choose a banned commander). 508.1e Only commanders that are part of the original deck are legal. If the tournament uses registration deck lists, the commanders must be listed within the deck. 508.1f Players are expected to take a decent and short time to choose commanders in between games then refer to rule 301.4 in this document. 508.1g Players may change the number of commanders by swapping commanders altering the number of commanders in their command zone and library or not (see Magic The Gathering Comprehensive Rules at section 702.). 508.1h Each restarted game or subgame is a subpart of the current round game. Therefore, players can’t swap commanders neither for restarted games nor for subgames. If a restarted or subgame would start, all players use the same commander(s) than the current one(s) from the main game that generated a game restart or a subgame (see Magic The Gathering Comprehensive Rules at section 723.).Duel Commander is a very charming mode, and I hope more people can experience the joy of this mode. But I don't know how to write programs, so I can only post a few major bugs that I have discovered here. Thank you to the creators of xmage for bringing us such excellent unofficial software. My English is not very good. If there is any difficulty in understanding the issues I have reported above, please leave a message below.