EDH Power Level Calculator: How It Works

An EDH power level calculator helps you estimate how strong a Commander (EDH) deck is on a rough 1–10 scale by scoring the deck’s key traits. You enter details like average mana value, number of fast mana rocks, tutors, combos, and interaction, and the calculator returns a power level number you can use as a starting point for discussing power with a playgroup. No calculator can perfectly judge a deck, but a structured score is far more useful than a vague “it’s about a 7.”

Formula

The calculator uses a weighted scoring model. Each input contributes a certain number of points, and those points are added to a baseline of 1 (the lowest possible power level). The final power level is capped at 10.

Power = 1 + (avg_cmc – 3.5) × 0.5 + (fast_mana) × 0.3 + (tutors) × 0.4 + (combos) × 0.8 + (interaction) × 0.05 + (draw) × 0.03

• avg_cmc – the average mana value (converted mana cost) of all non-land cards in the deck. Lower is generally faster and more powerful.
• fast_mana – number of cards that produce more mana than they cost, like Sol Ring, Mana Crypt, or rituals.
• tutors – number of cards that search your library for another card.
• combos – number of two- or three-card infinite combos in the deck.
• interaction – number of instant-speed removal, counterspells, and board wipes.
• draw – number of spells that draw cards or generate card advantage.

Worked Example

Using the default values from the calculator block:

1. Average mana value = 3.5 → (3.5 – 3.5) × 0.5 = 0
2. Fast mana = 2 → 2 × 0.3 = 0.6
3. Tutors = 3 → 3 × 0.4 = 1.2
4. Combos = 1 → 1 × 0.8 = 0.8
5. Interaction = 10 → 10 × 0.05 = 0.5
6. Draw = 12 → 12 × 0.03 = 0.36
7. Sum = 0 + 0.6 + 1.2 + 0.8 + 0.5 + 0.36 = 3.46
8. Power = 1 + 3.46 = 4.46, rounded to 4.5

The calculator shows 4.5/10, which is a reasonable “focused but not optimized” deck – a typical upgraded precon or a budget brew with a few synergies.

What the Power Level Number Means

The 1–10 scale is informal, but most players use these rough bands:

• 1–3 – Janky, unoptimized, or theme-only decks that rarely win before turn 10.
• 4–5 – Upgraded precons or casual decks with a clear game plan but no fast mana or combo wins.
• 6–7 – Focused decks with efficient interaction, some tutors, and a consistent win condition. This is the most common “casual but strong” range.
• 8–9 – Highly optimized decks with fast mana, multiple combos, and near-cEDH levels of consistency.
• 10 – Competitive EDH (cEDH) – the absolute best commanders and cards, designed to win as fast as possible.

Use the number as a conversation starter, not a definitive verdict. Two decks rated 7 can still have very different matchups.

How to Choose the Right Inputs

Getting a useful result depends on entering accurate numbers. Here’s how to count each category:

• Average mana value: Sum the mana values of all non-land cards, then divide by the number of non-land cards. Most decklist sites (like Archidekt or Moxfield) show this automatically.
• Fast mana: Count cards that produce more mana than they cost (e.g., Sol Ring, Mana Vault, Dark Ritual). Mana rocks that cost the same as they produce (like Arcane Signet) do not count.
• Tutors: Count any card that searches your library, including “fetch” lands that search for basic lands? No – only count spells that search for any card or a specific type like creature or instant, not basic land fetches.
• Combos: Count each distinct infinite combo. If you have two combos that share a piece, count them separately if they are both plausible.
• Interaction: Count instant-speed removal, counterspells, board wipes, and effects that stop opponents’ win conditions.
• Draw: Count spells that draw at least two cards or provide repeatable card advantage. Cantrips that draw one card don’t count.

If you’re unsure about a category, err on the lower side – it’s better to underrate your deck than overrate it.

Common Mistakes and Limitations

The biggest mistake is entering the average mana value of the entire deck including lands. Lands have mana value 0, which drags the average down and makes the deck look faster than it is. Always use non-land cards only.

Another error is double-counting cards. For example, a spell like Cyclonic Rift is interaction, not draw. A creature that draws on ETB is draw, not combo.

This calculator ignores many factors that affect real power: commander choice, synergies, mana base quality, and player skill. A deck with a low average CMC but no card draw will still stall out. A deck with tons of tutors but no win condition is just consistent at doing nothing.

The scale is also not linear – a 9 is exponentially stronger than an 8, not just 12.5% stronger. Treat the number as a rough guide, not a precise measurement.

How This Compares to Other Power Level Methods

Players use several informal ways to gauge deck strength:

• “It’s a 7” – The classic vague answer that tells you almost nothing. This calculator tries to replace that with a reproducible score.
• Turn-based assessment – “My deck usually wins by turn 9.” This is more concrete but depends heavily on the table.
• Card-based checklists – Some players rate decks by counting specific powerful cards (e.g., “if it has Mana Crypt, it’s at least an 8”). This is fast but ignores synergy.
• cEDH tier lists – For competitive decks, tier lists rank commanders, but they don’t apply to casual decks.

This calculator sits between a pure guess and a full cEDH analysis. It’s a good middle ground for a casual playgroup that wants a shared language.

Frequently Asked Questions

What is a good power level for a casual game?

Most casual tables aim for 5–7. A 5 is a typical upgraded precon, a 6 is a focused deck with a clear plan, and a 7 is a tuned deck that can win around turn 8–9. Avoid bringing an 8+ to a table that says “casual” – it will feel like a pubstomp.

Can a deck be a 10 without being cEDH?

No. A 10 means the deck is playing the most efficient cards and strategies available, which is the definition of cEDH. If your deck isn’t running the best tutors, fast mana, and combo lines, it’s not a 10 even if it wins every game against casual decks.

Why does my deck feel stronger than the calculator says?

The calculator uses a generic formula that doesn’t account for commander synergy. For example, a commander like Yuriko makes cheap evasive creatures extremely powerful, but the calculator only sees a low average CMC. If your deck has strong synergies, add 1–2 points to the result mentally.

How do I lower my deck’s power level?

Remove fast mana, tutors, and infinite combos. Replace them with slower ramp, card draw, and thematic cards. Increasing your average mana value by 0.5–1 point will also slow the deck down noticeably.

Is a higher power level always better?

No. Higher power decks are more consistent and faster, but they also require more expensive cards and can be less fun in a casual group. Many players prefer a 6–7 where games are interactive and last longer.

Does the calculator work for Pauper or budget decks?

Yes, but the scale is skewed. A Pauper deck with no rares will rarely score above 5, even if it’s the best Pauper deck possible. Use the number as a relative measure within your own collection, not an absolute ranking.

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in avg_cmc | Average mana value | - | 3.5 | 1 | 10
in fast_mana | Fast mana sources | - | 2 | 0 | 20
in tutors | Tutors | - | 3 | 0 | 20
in combos | Infinite combos | - | 1 | 0 | 10
in interaction | Interaction spells | - | 10 | 0 | 40
in draw | Card draw spells | - | 12 | 0 | 40
out power | Estimated power level | /10 | min(10, 1 + (avg_cmc - 3.5) * 0.5 + fast_mana * 0.3 + tutors * 0.4 + combos * 0.8 + interaction * 0.05 + draw * 0.03) | 1
out score | Raw score | points | (avg_cmc - 3.5) * 0.5 + fast_mana * 0.3 + tutors * 0.4 + combos * 0.8 + interaction * 0.05 + draw * 0.03 | 1