Commander Bracket Calculator
Import from Moxfield or Archidekt, or paste a list. Get your bracket in seconds, scored against the official rules.
Supports public Moxfield and Archidekt decks.
Bracket 2 decks
Explore all Bracket 2 decks →Explore all →Bracket 3 decks
Explore all Bracket 3 decks →Explore all →Bracket 4+ decks
Explore all Bracket 4+ decks →Explore all →How the bracket is calculated
The calculator applies the official bracket rules in the order they take effect. It checks your list against the 53-card Game Changers list and the Commander banlist, then against the three speed signals that break a bracket's expected game length: mass land denial, extra-turn spells, and two-card combos that win on resolution.
Every check is a lookup, not a judgement. Card names are matched against the current official lists, so the same list scored twice gives the same answer, and the score changes only when the Commander Format Panel changes the rules. No model is involved in producing the number.
Bracket 2 or Bracket 3?
A single Game Changer is the usual culprit. Bracket 2 allows none at all, so one card from the list moves the deck to Bracket 3 even if nothing else changes. A winning two-card combo does the same, unless the deck can reliably assemble it, in which case it is Bracket 4. Assembly is measured from tutors, fast mana and cheap card selection together, not tutors alone.
Extra turns are not the dividing line here. Only Bracket 1 rules them out; a single extra-turn spell is fine in Bracket 2. It is chaining them that ends games early and reads as Bracket 4.
This is the most common surprise the calculator delivers. A deck that feels casual at the table can be a rules Bracket 3 on the strength of one card that came in the box, and a handful of precons are Bracket 3 before you change anything. If you are working from one, the precon catalog lists every deck with its bracket already scored.
What pushes a deck to Bracket 4
Four things, any one of which is enough on its own: four or more Game Changers, a winning two-card combo your deck can reliably find before turn 6, any mass land denial, or extra-turn spells you can chain.
- Four or more Game Changers. The only hard card cap in the system. Three keeps you at Bracket 3.
- An assemblable winning combo. Two cards that end the game, plus the tutors, fast mana or cheap card selection to find them on demand. A combo you cannot reliably assemble stays Bracket 3.
- Any mass land denial. Armageddon, Ravages of War, Jokulhaups, Catastrophe. These end games in a turn or two regardless of what else is in the 99.
- Extra-turn spells you can chain. A single extra turn is fine at any bracket above Exhibition. Stringing two or more together is what breaks the 6-turn expectation.
What the calculator cannot see
How the deck actually plays. The bracket system is anchored to expected game length, and no list of card names fully captures speed. A tight Bracket 2 build with a clean mana base and a low curve will beat a sloppy Bracket 3 pile most games.
Treat the score as the floor for your Rule Zero conversation rather than the final word. For the rules themselves, the full Commander bracket system guide covers all five brackets and the complete Game Changers list.
Frequently asked questions
What bracket is my Commander deck?
Count how many of the 53 Game Changers your deck runs. Four or more is Bracket 4. One to three is Bracket 3. Zero is usually Bracket 2, unless the deck can still end games early through mass land denial, chained extra turns, or a two-card combo it can reliably find before turn 6. Import your list above and the calculator applies all four checks at once.
Is the bracket calculator free?
Yes, and it does not need an account. The score is deterministic: your list is matched against the official Game Changers list, the Commander banlist, and the community-recognised speed signals. No AI is involved in producing the number.
Can I import from Moxfield or Archidekt?
Yes. Paste a Moxfield or Archidekt deck URL and the calculator pulls the list directly, as long as the deck is public. You can also paste a plain text decklist, or pick a commander to start from scratch.
How many Game Changers can a Bracket 3 deck have?
Three. That cap is the only hard card restriction in the entire bracket system. A fourth Game Changer moves the deck to Bracket 4 automatically, regardless of how the rest of the list plays.
Does the calculator check for combos?
Yes. It looks for two-card combos that actually end the game, then rates whether your deck can reliably find them by measuring tutor count, fast mana, and cheap card selection. A combo you cannot assemble consistently stays Bracket 3; one you can find on demand is Bracket 4.
How accurate is an automatic bracket score?
It is exactly as accurate as the written rules, which is both the point and the limit. The bracket system is anchored to expected game length, and no card list fully captures how fast a deck actually plays. A tight Bracket 2 build will beat a sloppy Bracket 3 one. Treat the score as the floor for your Rule Zero conversation, not the last word.