Brawl is a Magic: The Gathering format that blends elements of Standard and Commander. Here's a straightforward overview:
Deck Building
Commander: Select a legendary creature or planeswalker to lead your deck.
Deck Size: Your deck must have exactly 60 cards, including your commander.
Singleton Rule: You can include only one copy of each card, except for basic lands.
Card Legality:
Standard Cards: Use cards that are currently legal in the Standard format.
Color Identity: All cards in your deck must match the colors of your commander.
Gameplay
Starting Life: Players begin with 25 life points.
Mulligan Rule: The first mulligan is free; subsequent mulligans follow the standard rules.