Bracket Check

Classify a Commander deck into its official 1-5 bracket and balance it toward a target — the classification is computed locally, no AI needed.

How it works

The official bracket system (effective late 2025) sorts decks by what they do, not how strong each card is: how many Game Changers they run, whether they pack a two-card win combo, and whether they lean on mass land denial, extra turns, or mass extra-card draw. There is no separate tutor-count gate — the old "count your tutors" rule was dropped in 2025 — but specific powerful tutors such as Demonic Tutor and Vampiric Tutor appear on the official Game Changers list and still count. Pick a target bracket and we list the specific cards pushing you over it, plus starter cuts — then a copy-ready prompt has an AI refine them into fair swaps.

Moxfield URL support requires the DeckFlow Bridge extension → Install it here

DeckFlow's server cannot reach Moxfield reliably, so Moxfield URLs in this app go through the DeckFlow Bridge extension, which fetches the deck from your logged-in browser. Install it once, allow this site, and every future Moxfield URL import just works.

Download DeckFlow Bridge (.zip) Full install instructions →

  1. Download the ZIP above and unzip it anywhere on your machine.
  2. Load unpacked in Chrome/Edge: open chrome://extensions, enable Developer mode, click Load unpacked, and pick the unzipped deckflow-bridge folder.
  3. Allow this site — v0.1.1 and later already allow deckflow.gg and localhost, so this is usually automatic. For any other origin, open the DeckFlow Bridge Options page and add it to the allowed-origins list.
  4. Retry — paste the Moxfield URL here again and submit. The DeckFlow Bridge intercepts automatically.

Can't install? Make the Moxfield deck public, or use Moxfield's Bulk Edit view and paste the deck export text into the text field instead.

Target bracket (optional)

Leave unset to just classify. Pick a target to get the cards that exceed it plus suggested cuts.

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How brackets are determined

The official Commander bracket system (WotC Brackets Beta, October 2025) classifies decks by measurable signals — not raw card power. The four signals are:

  • Game Changers — cards on the official WotC Game Changers list. Three or fewer keeps a deck in Bracket 3; four or more pushes to Bracket 4; ten or more (product heuristic) signals Bracket 5 territory.
  • Two-card win combos — any pair of cards that produces an automatic win when assembled. A single two-card win combo hard-floors a deck at Bracket 4.
  • Mass land denial — cards like Armageddon that destroy all lands at once. Any MLD card hard-floors at Bracket 4.
  • Extra turns — informational; does not change the bracket number per the current WotC rubric.

There is no separate tutor-count gate: the October 2025 update dropped the old tutor-density rule. However, specific powerful tutors such as Demonic Tutor, Vampiric Tutor, and Worldly Tutor appear on the official Game Changers list and still count as Game Changers.

Bracket 1 (Exhibition) is self-declared and is never auto-assigned. Zero signals defaults to Bracket 2 (Core).

The classification is computed directly in DeckFlow — no AI needed for the bracket number itself. The AI prompt is only for the optional balancer step (fair swaps to reach a target bracket).