Most Commander decks should start at 37 lands, then adjust
A commander land count calculator should start with 37 lands, then move slot by slot: subtract for genuinely low curve and cheap fixing ramp, add for expensive commanders, color strain, tapped lands, and decks that must keep hitting land drops after turn five.
Command Tower
Baseline fixing land
Command Tower is a useful reference point because it is untapped, fixes every commander color, and improves source quality without changing raw land count. A deck with 37 lands but too few Command Tower-style sources can still fail.
The practical Commander land count formula
Use this land-count worksheet to choose a first draft, then compare it with the Commander Deck Building Checklist and your opening hands. The worksheet is an editorial starting point, not an official rule or the exact formula behind every Deckcipher result. Two single-commander decks each have 99 cards in the library, yet the same land count can behave differently because of curve, ramp timing, colors, and card selection.
Use 37 lands as the neutral starting point. From there, adjust by asking what your first functional turn is. A deck that can operate on three lands, Sol Ring, and cheap plays can trim. A deck with a five-mana commander, several double-pip spells, and many tapped lands should add. The goal is not the lowest possible number; it is the number that lets the deck's normal game happen reliably.
A simple slot-by-slot worksheet looks like this: start at 37 lands; subtract one if your average mana value is low and your early plays function on three lands; subtract one only if you have enough one- and two-mana ramp or selection to support it; add one if the commander must be cast on time or recast; add one if your early color requirements are heavy; add one if many lands enter tapped or if your critical turn is six or later.
Build your deck and save land-count changes
Use the Deckcipher deck builder to draft the 100-card list, adjust lands, and keep saved versions in your account while you test different counts. Create a free account to save your deck and return to these choices.
Start with the deck's required land drops, not its average alone
Average mana value is useful, but it hides shape. A deck with many one-mana setup cards and several seven-mana finishers can show a moderate average while still needing the fifth and sixth land. A deck with a four-mana commander that draws cards immediately may be safer on fewer lands than a deck with the same average but no card advantage until turn six.
Write down the turn where the deck must function. Aggro often cares most about turns two through four. Midrange usually wants land drops through turn five. Control, expensive value, and mana-sink commanders often care through turns six or seven. The turn you need to function is one of the most important inputs in this editorial worksheet.
- Start at 37 lands.
- Subtract one if most important spells cost one to three and the deck functions on three lands.
- Subtract one only if you have several castable one- or two-mana ramp, draw, or selection pieces.
- Add one if the commander costs five or more, must be cast on schedule, or is likely to be recast.
- Add one if early spells require multiple specific colors or many lands enter tapped.
- Test 20 opening hands and first-five-turn sequences before making the final cut.
The point of the worksheet is to prevent vague labels from deciding the number. 'Midrange' does not automatically mean 36 lands, and 'aggro' does not automatically mean 34. Your actual curve, early sources, and critical turn decide the recommendation.
A calculator table for first-draft land counts
Use this table as the first pass for a normal 100-card Commander deck. It assumes you are not building a dedicated lands-matter deck, an ultra-low-curve competitive deck, or a commander that breaks normal mana rules.
Commander land count starting points
| Deck profile | Typical land count | What must be true | When to adjust |
|---|---|---|---|
| Low-curve aggro or tempo | 34 to 36 | Most plays cost one to three mana, and the deck can operate after three lands. | Add lands if colors are intense, the commander costs four or more, or the deck lacks draw. |
| Typical synergy or midrange | 36 to 37 | The deck wants four or five mana on schedule and has a balanced mix of threats, ramp, and answers. | Move up if the curve clusters at five or higher. Move down only with strong cheap ramp and draw. |
| Control or value engine | 37 to 39 | The deck wants to hit land drops while holding up interaction or using repeatable card advantage. | Add lands if many spells are expensive or if the commander is central and costly. |
| High-curve battlecruiser | 38 to 40 | The deck expects to cast large spells and cannot recover easily from missing early land drops. | Do not cut lands just to add more finishers. Increase ramp and draw before trimming mana. |
| Lands-matter or landfall | 40 or more | Lands are active engine pieces, not just mana sources. | Tune around payoff density, extra land-drop effects, and whether utility lands enter tapped. |
Choose the lowest number in a range only when the deck earns it. If the list has a five-mana commander, six five-drops, and mostly three-mana ramp, it should not start at the bottom just because it has a few mana rocks.
How average mana value changes the answer
Use average mana value as a pressure signal rather than a set of precise cutoffs. A list built around cheap spells may be able to test fewer lands; a list that needs several five- and six-mana plays usually wants more. There is no universal mana-value boundary where a deck suddenly earns a land cut. Inspect the actual spells you must cast, including the commander, and the mana you need to leave open afterwards.
Distribution matters as much as the average. Ten expensive cards at the top end affect gameplay differently from a smooth curve of two-, three-, and four-mana plays. Do not let one-mana cantrips hide the fact that your wins require six and seven mana.
- Cheap core spells: consider testing the lower end only if the deck can function on three lands and cast its early smoothing.
- A mix of early setup and four- or five-mana plays: compare 36 to 38 lands before making aggressive cuts.
- Repeated expensive plays or a commander that must be recast: compare 38 to 40 lands and lower the spell curve where possible.
- Extra land plays and landfall engines: evaluate lands as part of the action package, not merely as a cost of casting spells.
Also check the commander's mana value separately. A deck with average mana value 3.0 and a six-mana commander can still need a higher count if the commander is the engine.
Check the curve before changing lands
If you are unsure whether your deck is a 35-land or 38-land deck, inspect the curve first and then adjust the mana base.
What the land-drop odds actually show
A simple probability check helps separate a starting recommendation from a guarantee. The following figures are exact hypergeometric calculations rounded to one decimal place. They assume one commander and a 99-card library, an opening seven kept without a mulligan, and the normal draw on each of your turns in a multiplayer game, including turn one. There is no extra draw, selection, ramp, or restriction on whether a drawn land is usable.
| Lands in the library | At least three lands seen by turn three | At least four lands seen by turn four |
|---|---|---|
| 34 | 73.7% | 56.3% |
| 36 | 78.0% | 62.1% |
| 37 | 80.0% | 64.9% |
| 38 | 81.9% | 67.6% |
| 40 | 85.3% | 72.6% |
By turn three you have seen ten cards in this model; by turn four you have seen eleven. The calculation counts lands seen, not whether your first land entered tapped or whether you chose to discard one. It also does not describe hands selected through mulligans. That is why 37 lands can be a reasonable first draft without guaranteeing the fourth land drop. Cheap draw, selection, and disciplined keeps improve real sequences, while color problems can make a numerically successful draw fail in practice.
How ramp changes land count without replacing lands one-for-one
Ramp reduces pressure on land count, but it does not replace lands perfectly. Sol Ring can make a two-land hand explosive, but it does not fix colors. Arcane Signet fixes colors on turn two if you already have two mana. Nature's Lore and Farseek are excellent because they ramp and fix. Cultivate is useful, but at three mana it usually does not justify cutting a land by itself. Smothering Tithe and mana doublers increase ceiling, but they should not affect opening land count.
A practical rule: two-mana ramp that fixes colors can support trimming one land if the curve is already low. Three-mana ramp usually cannot. Late mana doublers, treasure engines that need opponents to cooperate, or conditional attack-based ramp should be counted as power, not as early land replacement.
How to value ramp when calculating lands
| Ramp type | Land-count impact | Reason |
|---|---|---|
| Sol Ring or one-mana acceleration | Can support a trim, but check colors | It accelerates early but may not cast colored spells. |
| Arcane Signet, Nature's Lore, Farseek | Best case for trimming one land | Two-mana ramp that fixes colors helps before the critical turn. |
| Cultivate, Kodama's Reach, three-mana rocks | Usually do not justify cutting lands alone | You need three mana first, so they do not fix weak openers. |
| Smothering Tithe or conditional treasures | Do not count as opening-hand land replacement | They depend on timing, opponents, or a board state. |
| Mana doublers | No land-count discount | They improve late-game output, not early land drops. |
If a deck looks like 37 lands but has eight cheap ramp pieces, test 36. Do not jump to 33 because the deck contains ramp. Lands are still the most resilient mana sources after board wipes and removal.
Card draw and selection are part of the calculation
Card draw changes how many lands you see over a game. Card selection changes whether you find lands early or bottom extras later. Cheap selection, looting, surveil effects, and one- or two-mana draw can support a leaner count. Six-mana draw spells cannot, because the mana base must already work before they resolve.
Separate early smoothing from late advantage. If your first draw spell costs four and your commander costs five, that card draw is not a reason to cut lands. If your deck has several one- and two-mana ways to see extra cards, the calculator can treat that as real early consistency.
Mana sinks are why some higher-land decks feel smooth. Commanders with activated abilities, flash-speed interaction, repeatable draw, and utility lands can turn land 38 into options instead of flood.
Color requirements can force more lands than the curve suggests
Land count and color source count are separate. A three-color deck can play 37 lands and still fail if too many lands enter tapped, produce colorless mana, or miss the early color it needs. Count sources after choosing the rough land number.
Example: a Mardu deck wants red or black on turn two for interaction, double white on turn four for a critical spell. If its 37 lands include five colorless utility lands, eight tapped lands, and only twelve white sources, it may hit land drops but still fail to cast the commander on time. The fix is not automatically land 38; it may be cutting a colorless land for Command Tower, a shock land, a pain land, or another untapped white source.
For a three-color green deck, the check might be different: if you need green on turn two for Nature's Lore and double white on turn four for a critical spell, you need enough untapped green sources early and enough total white sources by turn four. A balanced-looking mana base with equal lands by color may still be wrong if the early spell costs are not balanced.
Turn the land count into a real mana base
After you choose 35, 36, 37, or 38 lands, check whether those lands actually cast your colored spells on time.
Worked example: low-curve aggro at 36 lands
Sample profile: Isshin, Two Heavens as One Mardu aggro, 99-card library, hypothetical nonland average mana value 2.55, three-mana commander, eight one- and two-mana ramp or selection pieces, six early draw effects, ten tapped lands, and heavy early color pressure because the deck wants black or red interaction early plus white creatures by turn two.
Calculation: baseline 37. Subtract one for the low curve because most spells cost one to three. Subtract one for cheap help from cards like Sol Ring, Arcane Signet, Talisman effects, and two-mana draw. Add one back because the commander is three colors and the list has color-intensive early plays. The final recommendation is 36 lands, not 35, with a note to reduce tapped lands before cutting another land.
Critical turn: turn four. Keep hands that can produce two colors by turn two and all three by turn three if you want Isshin on curve. If testing shows many hands with two lands but the wrong colors, the next fix is better untapped fixing, not a random extra colorless utility land.
Worked example: midrange at 37 lands
Sample profile: three-color value midrange, 99-card deck, average mana value 3.18, four-mana commander, seven ramp cards, but only four cost two or less. It has nine draw effects, three early selection spells, five tapped lands, and wants to cast a four-mana commander while still holding one- or two-mana interaction.
Calculation: baseline 37. No curve subtraction because the deck has many four- and five-mana value plays. No ramp subtraction because Cultivate, Kodama's Reach, and three-mana rocks help after the opening danger window, while only four ramp pieces are truly early. No commander add because the commander costs four rather than five, but no color subtraction either because the deck needs two colors by turn two and all three by turn four. Final recommendation: 37 lands.
Critical turn: turn five. This deck loses sequencing power if it misses the fifth land, because it wants to cast a value spell and still interact. If it floods in testing, add mana sinks or card draw before cutting to 36.
Worked example: control or expensive value at 39 lands
Sample profile: Esper control, 99-card deck, average mana value 3.62, five-mana commander, six ramp pieces, only two of which cost two, twelve draw spells, but most cost four or more. The deck has eleven tapped lands and wants to hold up interaction while reaching six and seven mana.
Calculation: baseline 37. Add one for the high average mana value and expensive interaction turns. Add one because the five-mana commander is central and will often be recast. Do not subtract for ramp because most acceleration is three mana or later. Add pressure from tapped lands, but instead of going to 40 immediately, first improve the mana base. Final recommendation: 39 lands with a plan to cut tapped lands and add cheap card selection.
Critical turn: turn six. Goldfishing only the first four turns understates this deck's needs. It must answer threats, keep making land drops, and recover after wipes. If every turn forces a choice between interaction and development, the count is too low or the answers are too expensive.
When 40 or more lands is correct
Forty or more lands is a useful starting point to examine when lands are part of the engine. Landfall, extra land-drop commanders, graveyard land recursion, and utility-land strategies can treat lands as active cards rather than blanks. In those decks, a 41-land list may be more functional than a 36-land list full of spells that do not advance the plan.
High land counts still need source discipline. A 42-land deck can miss colors if too many lands enter tapped or make only colorless mana. Very low counts have the opposite problem: 32 or 33 lands may work in specialized shells, but most casual Commander decks become too dependent on perfect openers.
The question is always whether the extra land slot increases functional games. If landfall triggers, activated abilities, or graveyard loops turn that slot into action, keep it. If it only prevents mana screw while increasing flood, adjust draw, selection, and curve.
Common land count mistakes and how to fix them
The first mistake is treating all ramp as lands. A hand with two lands, Cultivate, and four five-drops is still fragile. Count only early, reliable ramp as land-count pressure, and check whether the opening hand can actually cast it.
The second mistake is changing the count after one flooded or mana-screwed game. Commander is high variance. Look for patterns across opening hands. If you regularly miss the third or fourth land, add one land or more early smoothing. If you hit lands but cannot cast spells, fix colors.
The third mistake is ignoring tapped lands. A 37-land deck with too many tapped lands can play like it is a turn behind. Track how often your first three lands enter untapped, especially if the deck has one- and two-mana plays.
The fourth mistake is adding utility lands before colored sources. In three-color decks, every colorless land is a real cost. Add utility lands only after your early source requirements are covered.
- Miss early land drops: add one land or improve cheap draw and selection.
- Have lands but wrong colors: improve fixing, not raw count.
- Flood with nothing to do: add mana sinks, draw, or utility lands.
- Hands have mana but no action: lower curve or improve threat density.
- Hands have action but no mana: land count or source count is too low.
A repeatable testing process for your final number
After choosing a first draft number, test 20 opening hands and play the first five turns honestly. Record four failures: mulligan for too few lands, wrong colors, ramp not castable, and missing the critical land drop. Do not assume ideal draws.
For a hypothetical log, suppose 20 hands at 35 lands include six mulligans, five color problems, and four missed fourth land drops. Those events can overlap, so do not add them into a failure percentage. The sample is a reason to compare a 36-land version and improve early sources, not proof that every similar deck needs exactly 36 lands. Twenty hands can expose obvious trouble, but it is too small a sample to promise a precise success rate.
Make one change at a time. Test 36 versus 37 before also changing ten dual lands and five spells. Save versions so you know whether the land count, the source mix, or the curve change solved the issue.
Audit the deck after testing hands
After you settle on a land count, run the full list through an audit to catch curve, ramp, interaction, and consistency issues that land count alone cannot solve.
Concrete next steps
Use 37 lands as the default. Test 36 if the curve is low and your early ramp or selection is real. Test 38 or 39 if the deck is slower, color-intensive, tapped-land heavy, or commander-dependent. Start at 40 or more only when lands are engine pieces.
Then turn the number into a mana base. Count untapped colored sources, decide how many tapped lands you can afford, and limit utility lands until the early colors are stable. A good commander land count calculator gives the starting number; testing and source quality finish the deck.
- Start at 37 lands.
- Adjust for average mana value and the critical turn.
- Count only early, reliable ramp when considering a cut.
- Add pressure for commander dependency, color intensity, and tapped lands.
- Check colored sources with the mana base calculator.
- Use 20 opening hands as an initial screen, then collect more games before drawing strong conclusions. Change one slot at a time.
The best land count is the one that makes your deck's normal game happen more often: early plays, correct colors, critical land drops, and enough action to matter at a multiplayer table.
FAQ
What is the recommended land count for a Commander deck?
Most Commander decks should start at 37 lands. Low-curve decks with reliable early ramp can test 34 to 36, while slower control, value, or high-curve decks often want 38 or 39. Lands-matter decks can correctly play 40 or more.
Is there a formula for a Commander land count calculator?
Use 37 as the baseline. Subtract one for a low curve, subtract one only for reliable cheap ramp or selection, and add one for an expensive commander, demanding colors, tapped lands, or a deck that must hit land drops through turn six or later.
How does average mana value affect land count?
Lower average mana value supports fewer lands when the deck has early colors and draw. Higher average mana value pushes toward more lands because missed land drops delay more of the deck. Also check where the curve clusters and how much the commander costs.
Do mana rocks and ramp spells let me cut lands?
Sometimes, but not one-for-one. Sol Ring, Arcane Signet, Nature's Lore, and similar early ramp can support trimming a land. Cultivate and three-mana rocks usually do not by themselves. Smothering Tithe and mana doublers should not change opening land count.
Should aggro Commander decks play fewer lands?
Often yes, but only if the curve is genuinely low and the deck has enough early colored sources. Many aggressive decks can test 35 or 36 lands. Going lower is risky unless the deck has strong cheap draw, selection, or acceleration.
Why does my deck still miss colors with enough lands?
Land count and color source count are different. A 37-land deck can still fail if too many lands enter tapped, make colorless mana, or do not produce the colors needed in the first turns. After choosing the count, check source requirements with a mana base tool.
How many lands should a control Commander deck play?
Many control decks want 37 to 39 lands because they need to hit land drops while holding up interaction and rebuilding in longer games. If the deck has expensive spells, a costly commander, or many tapped lands, 38 or 39 is safer.
How do I know if I should add a land or more card draw?
If you miss land drops early, add a land or improve early smoothing. If you hit lands but run out of meaningful plays, add card draw or mana sinks. If you have lands but cannot cast spells, fix colors before changing the raw land count.