Commander deck checker

Is your deck legal, and which bracket does it belong in? Paste your list and see right away. Free, no account.

What the checker looks at

• The card count (Commander: exactly 100, including your commander)
• Singleton: one of each card, except basic lands
• Banned and non-legal cards in the chosen format
• Cards outside your commander's color identity
• The Game Changers in your deck and the lowest bracket that fits

What the brackets mean and the full Game Changers list: Commander brackets explained. The rules themselves: Commander rules.

Frequently asked questions

Which formats can I check?

Commander, Brawl, Oathbreaker and the 60-card formats such as Standard, Pioneer, Modern, Legacy, Vintage and Pauper. Legality comes from Scryfall and follows the official ban lists.

How does the checker set my bracket?

Only on the number of Game Changers: none = bracket 1 or 2, one to three = bracket 3, more = bracket 4 or higher. It does not count mass land denial, extra turns or combos; check those yourself.

My commander is not recognised.

Put it under a "Commander" heading at the top of your list, the way Moxfield and Arena export. Otherwise pick it from the list after checking.

Build the deck from your own collection →

Last updated: 13 October 2026