In this new format sanctioned by Wizards is basically a standard format Commander. You build a 60-card Standard-legal deck around a legendary creature or planeswalker. You can only have one copy of any given card in your deck other than basic lands. Your legendary creature or planeswalker starts in the command zone and works the same way that you might be used to from Commander: you can cast it for its mana cost, and then again for an additional two mana each time. Each player starts with 30 life.
And that's it! Simple, easy, and a kind of gameplay you might already be familiar with. We suggest playing it multiplayer.
Let's take a look at the full rules overview of the format, courtesy of Rules Manager Eli Shiffrin:
Each player's deck is exactly 60 cards. Other than basic lands, no card may appear in a deck more than once. Each card must be legal in the Standard format; cards banned in the Standard format can't be played in the Brawl variant.
Before the game begins, each player designates one legendary creature or planeswalker card in their deck as their commander. This card begins the game in the command zone and the other 59 cards are shuffled up.
The mana symbols that appear on your commander dictate what cards may be in your deck. Mana symbols that don't appear on your commander can't be in the deck. For example, if the Dominaria card Firesong and Sunspeaker is your commander, your cards may have R, W, both, or neither, but no B, G, or U symbols may appear anywhere in your deck. This includes the card's text box as well as its mana cost; for example, Pride Sovereign from the Hour of Devastation set can't be in your deck if your commander has only G in its cost and rules text.
Each player begins the game at 30 life rather than 20. If you're playing a multiplayer game (which we recommend for Brawl!), each player draws seven cards again on their first mulligan and the player who plays first draws a card on their first turn.
As long as your commander is in the command zone, you may cast it from there. Doing so costs an additional two mana for each time you have cast the card this way this game.
If your commander is countered or leaves the battlefield, you may put it back into the command zone instead of putting it anywhere else it would go.
The Brawl variant has no other rules for playing, winning, or losing the game. Have fun!
There will be no entry fee at this point as we want to keep this a casual game to see how it goes. There may be prize support based on old promos that we are allowed to hand out.