Commander Bracket & Power Level Calculator
Estimate your Commander deck's bracket using the official 5-bracket system. Analyzes interaction density, instant-speed ratio, Game Changers, two-card combos, and mass land denial.
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Import a deck URL above or paste your decklist manually, then click Analyze.
How This Commander Bracket Calculator Works
This calculator analyzes your Commander decklist against the official 5-bracket system introduced by Wizards of the Coast. It checks for hard rules that force a bracket floor — Game Changers, mass land destruction, and two-card infinite combos — then evaluates soft signals like fast mana density, tutor count, ramp, card advantage, and combo potential to compute a power level score from 1 to 10.
The interaction density analysis measures what percentage of your nonland cards are dedicated to removal, counterspells, and board wipes. It breaks down your interaction by CMC distribution, calculates your instant-speed ratio, flags CMC gaps where you have no cheap answers, and identifies dual-purpose cards that serve double duty. These metrics are calibrated per bracket — a Bracket 3 deck has different density expectations than a cEDH list. For more on the bracket system, see our Commander Brackets guide. For deck building advice, see the Commander deck building guide.
Frequently Asked Questions
Commander brackets are a 5-tier power level system introduced by Wizards of the Coast in 2025. Bracket 1 (Exhibition) is for ultra-casual decks that prioritize a theme over power — no Game Changers allowed. Bracket 2 (Core) is for straightforward, unoptimized decks. Bracket 3 (Upgraded) allows up to 3 Game Changers with strong synergy. Bracket 4 (Optimized) is lethal and consistent with no card restrictions. Bracket 5 (cEDH) is for competitively metagamed decks built to win as fast as possible.
Paste your decklist into the calculator above. It analyzes your fast mana, tutors, interaction density, combo pieces, Game Changers, mass land destruction, and extra turn spells. Each category has hard rules (like MLD forcing Bracket 4) and soft signals that determine your overall bracket rating and power level score from 1 to 10.
Game Changers are powerful cards identified by WotC that significantly affect the game. As of the February 2026 update, the list contains 53 cards. Examples include Rhystic Study, Cyclonic Rift, Smothering Tithe, and Thassa’s Oracle. They are not allowed in Brackets 1–2 and limited to 3 cards in Bracket 3. Brackets 4–5 have no Game Changer limit. See the full list in our Game Changers guide.
Several factors force Bracket 4 or higher: mass land destruction (Armageddon, Obliterate), 4 or more Game Changers, fast two-card infinite combos like Thassa’s Oracle + Demonic Consultation, or very high combined power signals across fast mana, tutors, and combos. Bracket 5 (cEDH) is reserved for competitively metagamed decks that combine all of these elements.
No. Sol Ring is not on the official Game Changers list. While it is one of the most powerful cards in Commander, WotC decided it is ubiquitous enough that restricting it would be impractical. Sol Ring is legal in all 5 brackets.
Most Commander preconstructed decks land in Bracket 1 or 2, though WotC has noted that precon power varies by product line. Starter Commander Decks are Bracket 1, while standard precons are typically Bracket 2 (Core). Some precons from premium sets may include Game Changers and reach Bracket 3.
Bracket 4 (Optimized) decks are lethal and consistent but built for casual-competitive play. Bracket 5 (cEDH) decks are meticulous, competitively metagamed lists built to win in tournament settings. The key difference is intent: Bracket 4 plays powerful cards, Bracket 5 is built to win as fast and efficiently as possible against equally optimized opponents.
Interaction density is the percentage of your nonland cards dedicated to removal, counterspells, and board wipes. It measures how much of your deck answers threats rather than advances your gameplan. This calculator rates density as light, healthy, or heavy based on your bracket: Bracket 1–2 decks typically run 8–15%, Bracket 3 runs 12–22%, and Bracket 4–5 runs 15–28%.
In a 4-player game you have three opponents’ turns to respond to threats. Instant-speed interaction lets you hold up mana and react to the biggest threat at the table. Below 40% instant-speed means most of your answers can only be used on your own turn, leaving you vulnerable during 75% of the game. Bracket 3 and above should aim for at least 50% instant-speed interaction.
Dual-purpose cards serve multiple roles in your deck. For example, Cyclonic Rift is both a Game Changer and interaction, while Mystic Confluence counts as both interaction and card advantage. The calculator detects these overlaps because dual-purpose cards increase your effective interaction density without sacrificing slots for your gameplan.
What This Tool Measures
Deck construction: card quality, combo density, interaction coverage, synergy depth, mana consistency, and speed potential. This tells you what bracket your deck belongs in for pre-game Rule 0 conversations. Hard floors (Game Changers, two-card infinite combos, mass land destruction) set the minimum bracket. Soft signals (interaction density, tutor count, card popularity, mana curve) determine position within that bracket.
What This Tool Does Not Measure
Pilot skill, local meta matchups, political dynamics, or actual game outcomes. A Bracket 4 deck piloted poorly will lose to a Bracket 2 deck piloted well. Brackets describe the ceiling of your deck, not your win rate. The WotC bracket system is an absolute construction metric — a Bracket 3 deck is Bracket 3 regardless of who is at the table or what they are playing.
Why This Matters
Most bracket tools check each card against a list. If your card is not flagged, it scores low. This tool goes further: it cross-references every card pair against Commander Spellbook’s verified combo database, runs a 14-axis synergy analysis, evaluates interaction coverage across six removal categories, and scores card quality using EDHREC popularity data. The result is a bracket rating based on how your cards work together, not just what they are individually.
How Much Interaction Does Your Commander Deck Need?
Commander is a multiplayer format where threats come from three opponents, not one. Every turn cycle, three players deploy creatures, cast enchantments, and advance combos before you get another chance to act. A deck with too little interaction loses to the first unanswered threat at the table. A deck with too much interaction struggles to win because it spends all its cards answering threats instead of building toward a gameplan.
Interaction Density by Bracket
The right amount of interaction depends on your power level. Bracket 1–2 decks are casual and rarely need more than 5–10 interaction spells (8–15% of nonland cards). Bracket 3 decks face stronger threats and should run 8–14 interaction spells (12–22%). Bracket 4–5 decks operate in environments where a single unanswered combo wins the game — they need 10–18 interaction spells (15–28%), often weighted heavily toward instant-speed counterspells. Paste your decklist into the calculator above to see your exact interaction density, CMC distribution, and gap warnings.
What Is Interaction Density in Commander?
Interaction density is the percentage of your nonland cards dedicated to answering opponents’ threats: targeted removal, counterspells, board wipes, and enchantment or artifact destruction. Raw card count alone misses the picture — a 99-card deck with 12 removal spells has about 18% density, but if 10 of those cost 4+ mana, you cannot respond in the early turns when fast combos threaten to win.
How This Tool Measures Interaction
The calculator breaks interaction down into three sub-metrics that no other tool provides. Instant-speed percentage measures how much of your interaction can be used on opponents’ turns — the turns where 75% of the game happens in a 4-player pod. Average CMC of interaction rates your answers as efficient (2.0 or less), moderate (2.1–3.0), or expensive (above 3.0). CMC gap detection flags when your deck has zero answers below a certain mana value, leaving you unable to interact in the early game. It also identifies dual-purpose cards that count as both interaction and another role like card advantage, increasing your effective density without costing extra slots.
Understanding Instant-Speed Interaction in Commander
In a 4-player Commander game, you take one turn for every three your opponents take. Sorcery-speed removal like Wrath of God is powerful but can only be cast on your turn — it cannot stop a combo or lethal attack on an opponent’s turn. Instant-speed interaction lets you hold up mana, observe what all three opponents do, and spend your answer on the most dangerous play.
Efficient Instant-Speed Interaction by Color
Every color has access to efficient instant-speed answers. White has Swords to Plowshares and Path to Exile at 1 mana. Blue has Counterspell, Swan Song, and Negate at 1–2 mana. Black has Fatal Push, Infernal Grasp, and Deadly Rollick. Red has Chaos Warp and Lightning Bolt. Green has Beast Within and Nature’s Claim. Multicolor staples include Assassin’s Trophy (unconditional removal at 2 mana) and Abrupt Decay (uncounterable, hits permanents with mana value 3 or less). The calculator flags when your instant-speed ratio falls below 40%, which signals that most of your interaction only works on your own turn.