Commander Bracket Rater
Paste a Magic: The Gathering Commander decklist or deck link and get a recommended bracket (1–5) based on Wizards of the Coast's published Commander Bracket rules, a 1–10 power level, and a breakdown of the mana base.
Live site: https://alexanderbickler.github.io/commander-bracket-rater/
What it checks
| Rule | Bracket effect |
|---|
| Game Changers (53-card list, Feb 2026 update) | 1–3 → Bracket 3, 4+ → Bracket 4 |
| Mass land denial | Bracket 4 |
| Chained extra turns | Bracket 4 (single extra turns → Bracket 2) |
| Two-card infinite combos | Late game → Bracket 3, early game → Bracket 4 |
Power level (1–10)
The page looks up every card on Scryfall, scores eight factors from 0 to 10, and combines them with the formula from CodingAce's EDH power level calculator:
Power Level = Mana Engine × 18% + Consistency × 18% + Win Pressure × 20% + Interaction × 14% + Resilience × 10% + Protection × 8% + Disruptive Pressure × 7% + Card Quality × 5%
The weights are CodingAce's. How each factor is scored from the cards is this site's own estimate:
| Factor | Weight | Built from |
|---|
| Mana Engine | 18% | Curve (30%), land count and color fixing (25%), ramp (20%), fast mana (25%) |
| Consistency | 18% | Dedicated card draw (40%), tutors (35%), synergy: commander impact and share of spells on the commander's creature types (25%) |
| Win Pressure | 20% | Win condition efficiency (55%) and expected win turn (45%) |
| Interaction | 14% | Removal, counterspells, bounce and board wipes. 18 answers score 10 |
| Resilience | 10% | Recursion, repeatable token makers and draw engines |
| Protection | 8% | Hexproof, indestructible, ward, phasing or protection, plus counterspells |
| Disruptive Pressure | 7% | Taxes, locks, discard, theft and mass land denial aimed at opponents |
| Card Quality | 5% | Game Changers, known staples, and the share of spells costing 2 or less |
The result also lists the headline deck stats: tutors, dedicated card draw, interaction/removal, win condition efficiency, mana base consistency, commander impact and average CMC.
The power level maps to a bracket:
| Power level | 1.0–3.9 | 4.0–5.9 | 6.0–6.9 | 7.0–7.9 | 8.0–10 |
|---|
| Bracket | 1 Exhibition | 2 Core | 3 Upgraded | 4 Optimized | 5 cEDH |
The recommended bracket is the higher of the power level's bracket and the rules floor above, so the power level can raise a bracket but never lower it below what the rules require. You can also mark a deck as "theme first" (lets a Bracket 2 power level with no rule violations drop to Bracket 1) or "tuned for competitive pods" (turns Bracket 4 into Bracket 5).
While cards are being looked up, the verdict panel shows a loading spinner, "Rating your deck, please wait…" and a progress bar, so a provisional bracket never flashes up and then changes. If Scryfall can't be reached, the page falls back to its built-in lists: tutors, fast mana and free interaction are shown as power signals and can move a deck up one bracket, and the verdict is labeled "rules only".
Mana base
The result counts the basic lands by type (Plains, Island, Swamp, Mountain, Forest, plus Wastes when the deck makes colorless mana), shows how many lands can make each color, and lists the nonbasic and mixed lands grouped by the colors they make. Fetch lands count toward the basic types they can find.
Each color has its own gem: white (Plains), blue (Island), black (Swamp), red (Mountain), green (Forest) and colorless. The gems are original drawings (sun, drop, skull, flame, tree, diamond in a hexagon), not Wizards' mana symbols, which the Fan Content Policy doesn't allow fan sites to use.
Cards by role
After a rating, the Cards by role section shows the deck's card images grouped by what each card does: Commander, Board Wipes, Removal & Interaction, Ramp, Card Draw, Tutors, Protection, Recursion, Win Conditions, Creatures, Other Spells and Lands. Each card appears once, in the first group it fits, using the same rules-text reading as the power level. Images come from Scryfall, are shown whole (never cropped or covered, so the artist and copyright lines stay visible), load only as you scroll to them, and link to the card on Scryfall.
Design, accessibility and fan-content rules
- Theme: an original parchment-and-gold look (midnight and gold in dark mode). It uses no Wizards logos, mana symbols, planeswalker, guild or set symbols, card frames, card backs, card art or the Beleren typeface. The required Fan Content notice is in the footer.
- Accessibility: built to WCAG 2.2 AA. Every color pair meets contrast minimums in both themes, the page has landmarks, a skip link and a clean heading order, and screen readers hear "Rating your deck, please wait" and the result through a live region. Every result section except the recommended bracket can be collapsed with a keyboard-accessible button. Links that open new tabs say so, the spinner stops for people who prefer reduced motion, and the layout reflows at 320px wide with no sideways scrolling. Checked with axe-core in every state, in light, dark and high-contrast modes.
How to use
There are three ways to get a deck in. None of them rates the deck until you choose Rate deck, so you can check the fields first.
- Paste a deck link from Moxfield, Archidekt, TappedOut, Deckstats or MTGGoldfish (a deck page or a Commander archetype page) into the deck link box. The page asks a small server function (
api/deck.js, hosted on Vercel) to fetch the deck, then fills in the commander and decklist. Browsers can't read these sites directly, so the server does it. Private decks can't be loaded, and some sites refuse servers: Moxfield until it grants API access (see below), and TappedOut and Deckstats, which block automated requests. For those, use the bookmark.
- Send to Rater bookmark (fallback for Moxfield, Archidekt, TappedOut and Deckstats): drag it from One-click import to your bookmarks bar, then click it on any Moxfield, Archidekt, TappedOut or Deckstats deck page. It reads the deck in your own browser, so it works even when the server is refused.
- Paste the text export (Moxfield: More → Export → plain text; Archidekt and MTGO/Arena exports work too) into the decklist box. A full list replaces both fields: a Commander section goes into the Commander box and the rest into the decklist. Sideboard and maybeboard sections are left out.
Editing the fields after a rating shows a notice instead of re-rating; choose Rate deck again to update.
Deck link importer (Vercel)
api/deck.js is a Vercel serverless function. GitHub Pages keeps serving the site; Vercel only runs the importer.
- Sign in at vercel.com with GitHub and choose Add New → Project, then import this repository. Keep the defaults: Framework Preset: Other, no build command.
- Deploy. This project's importer lives at
https://mtgcommander.vercel.app/api/deck, which is what DECK_PROXY in index.html points to. If you move it to another Vercel domain, update DECK_PROXY to match.
- Optional Environment Variables (Project → Settings):
ALLOWED_ORIGINS: comma-separated sites allowed to use the importer. Defaults to https://alexanderbickler.github.io plus localhost. The Vercel deployment's own domain is always allowed.MOXFIELD_USER_AGENT: Moxfield blocks unknown servers. If you email Moxfield and they grant API access, they give you a user agent string; put it here and Moxfield links will load.
How each site is read:
| Site | Link | What the importer fetches |
|---|
| Moxfield | moxfield.com/decks/<id> | Moxfield's deck API (v3, then v2) |
| Archidekt | archidekt.com/decks/<id> | Archidekt's deck API |
| TappedOut | tappedout.net/mtg-decks/<slug>/ | The text export (?fmt=txt, then ?fmt=dec); the commander comes from TappedOut's *CMDR* marker when present. TappedOut blocks automated requests, so the bookmark is the dependable route |
| Deckstats | deckstats.net/decks/<id>-<name> | For /decks/<owner>/<id>-<name> links, Deckstats' internal deck API first (unofficial; its maintainer has said tools may use it). Then the text export (?export_txt=1, then ?export_dec=1). The commander comes from the # !Commander flag. Deckstats blocks many automated clients, so the bookmark is the dependable route |
| MTGGoldfish | mtggoldfish.com/deck/<id> or /archetype/commander-<name> | The deck's download, or the decklist on the archetype page; the commander is matched from the archetype name |
If a list doesn't mark its commander, the commander box stays empty so you can type it. The importer only fetches deck links on these five sites, never other URLs. It caches each deck for 5 minutes, and gives up after 8 seconds. Vercel's free Hobby plan covers this use.
Limits
- Card draw, removal, tutor, ramp and finisher counts come from reading each card's rules text, so unusual wording can be missed or miscounted. Factor scoring and the bracket bands are estimates. Edit
POWER_WEIGHTS and powerLevel() in index.html to tune them.
- The power level and the land colors need an internet connection to reach Scryfall.
- This is not legal advice. The theme and gems were designed to stay clear of Wizards' protected marks, but only a lawyer can assess legal risk.
- Deck import relies on Moxfield's and Archidekt's own deck data, which they can change at any time. If an import stops working, paste the text export instead.
- Mass land denial, extra-turn, combo and tutor detection uses built-in lists of well-known cards and may miss obscure ones. Use Commander Spellbook's Find My Combos for a full combo check.
- Doesn't check the banned list.
- When Wizards updates the Game Changers list, edit the
GAME_CHANGERS array in index.html. The live list is on Scryfall.
Running locally
It's one static file with no build step. Open index.html in a browser (the power level needs internet access for Scryfall).
Commander Bracket Rater is unofficial Fan Content permitted under the Fan Content Policy. Not approved or endorsed by Wizards. Portions of the materials used are property of Wizards of the Coast. ©Wizards of the Coast LLC.
