TLDR
- Decide what kind of Commander game the deck is supposed to create.
- Draw at least 20 opening hands before changing the list.
- Goldfish the first five or six turns to test mana, pacing, and sequencing.
- Use proxies to test expensive or uncertain cards in real games.
- Change a few cards at a time so you know what actually fixed the deck.
- Do not buy the full list until the deck has survived several games against real interaction.
A Commander deck can look brilliant in a deck builder and still fall apart the moment someone casts a removal spell.
The mana curve looks smooth. The synergy score looks good. Every card has a reason to be there. Then game night arrives, and you spend six turns with three lands, two seven-mana creatures, and a support card that only works when your commander is already winning.
That is why it makes sense to playtest a Commander deck before buying the cards. A few structured tests can expose mana problems, dead cards, slow win conditions, and mismatched power levels before they become a stack of regrettable purchases.
And no, drawing one opening hand and saying, “Looks good to me,” does not count.
Start With the Game You Want the Deck to Play
Before testing individual cards, define what the deck is supposed to do.
Commander decks are not judged in a vacuum. A slow value deck may feel great in a relaxed pod and miserable against optimized combo lists. A fast deck may work exactly as designed but still be a poor fit for the people you normally play with.
Wizards currently describes five optional Commander brackets. Brackets 1 through 3 cover different levels of socially focused play, while Brackets 4 and 5 move toward higher-powered and competitive games. The bracket system is meant to support pregame conversations, not replace them.
Before you playtest a Commander deck, write down four things:
- The approximate Commander bracket
- The turn when the deck should become threatening
- The main way the deck expects to win
- The kinds of decks it should be able to play against
For example:
This is a Bracket 3 artifact deck. It should establish its engine by turns four or five, interact with opposing threats, and win through artifact synergies rather than a fast two-card combo.
That sentence gives your testing a target. Without one, every problem can be explained away as “the deck doing its thing.”
Use the 20-5-3 Commander Playtest Method
A practical Commander playtest can be divided into three stages:
- Draw 20 opening hands.
- Goldfish the first five turns repeatedly.
- Play at least three real games before making major changes.
This is not a scientific law. It is simply enough repetition to catch common problems without making deck testing feel like unpaid data entry.
Each stage answers a different question.
Opening hands test consistency. Goldfishing tests sequencing. Real games test whether the deck survives contact with other players.
Skipping directly to real games can make diagnosis difficult. You may know the deck felt bad, but not whether the problem was the mana base, card draw, interaction package, or one opponent who decided you were the threat before you had played a second land.
Draw 20 Opening Hands
Start by shuffling the deck and drawing seven cards.
Evaluate the hand honestly. Would you keep it during a normal game? If not, take a mulligan using the same rules you would at the table.
Record a few basic details:
- Number of lands
- Available colors
- Early ramp
- Early card draw
- Castable spells
- Whether the hand depends on drawing something specific
You do not need a complicated spreadsheet. A simple note such as “keep, three lands, ramp, no draw” is enough.
After 20 hands, look for patterns.
A healthy opening hand usually gives you something to do during the first few turns. That does not mean every hand needs Sol Ring, Arcane Signet, and the exact three-card engine you designed the deck around. It means the hand should participate in the game.
Warning Signs in Opening Hands
Repeatedly seeing any of the following deserves attention:
- Two-land hands with no cheap ramp
- Four or five lands with no useful action
- Lands that cannot produce the colors your early spells require
- Too many expensive cards
- Support pieces without the cards they support
- Hands that become unusable if the commander is removed
- Cards you keep talking yourself into keeping
That final one matters.
If every questionable hand comes with a small speech about how good it will be after drawing the right land, creature, or tutor, the hand is probably bad. Your deck should not require closing arguments before the game starts.
Goldfish the First Five or Six Turns
Goldfishing means playing the deck against an opponent who does nothing. It is one of the oldest basic methods for rough-testing a Magic deck because it lets you examine sequencing without outside interference.
Play your opening hand as though you were in a real game. Make normal mulligan decisions. Draw one card per turn. Play lands, cast ramp, deploy your commander, and begin assembling the deck’s engine.
Stop around turn five or six and record what happened.
Ask:
- Did I hit my land drops?
- When could I cast my commander?
- Did I have a useful play each turn?
- Did the deck draw extra cards?
- Did the main strategy begin working?
- How many cards were stranded in my hand?
- Did I have any interaction available?
- What would happen if my commander were removed?
Run this test several times.
One smooth opening proves very little. Ten attempts will tell you much more about how often the deck actually functions.
Test the Mana Base Before Anything Else
Mana problems can make good cards look bad.
If you cannot cast your spells, it does not matter how powerful they are. And Commander mana bases are easy to misjudge because the deck contains 100 cards and most nonbasic cards appear only once.
The official Commander format uses a 100-card deck, including the commander, and generally follows singleton construction outside basic lands. That makes consistency a central deck-building problem rather than something the format solves for you.
During testing, track more than the total number of lands.
Look at:
- How many lands enter tapped
- When each color becomes available
- How often utility lands delay your spells
- Whether ramp produces the colors you need
- How many hands depend on drawing a third or fourth land
- Whether your land count matches your average mana value
A three-color deck may technically have enough mana sources while still failing to produce the right colors at the right time.
For example, a deck with several double-white three-mana spells needs dependable early white mana. Adding another colorless utility land because its ability looks useful may make the deck worse even though the total land count stays the same.
Do Not Fix Every Mana Problem With More Lands
Sometimes the deck needs another land.
But sometimes it needs:
- Cheaper card selection
- Better color fixing
- Fewer expensive spells
- More two-mana ramp
- Fewer tapped lands
- A lower reliance on the commander
Adding three lands to a deck filled with six-mana cards may improve opening hands while leaving the underlying curve problem untouched.
Check Whether the Deck Works Without Its Commander
Your commander should improve the deck. It should not be the only card holding the deck together.
Run at least a few goldfish tests where you pretend the commander has been removed twice. That means adding the appropriate commander tax before casting it again.
Then ask whether the rest of the deck still has a plan.
A fragile commander-dependent deck often has one or more of these problems:
- Too many cards that only work with the commander
- No alternative source of card advantage
- No backup payoff for the deck’s main mechanic
- No protection or recursion
- A commander that costs too much to recast
- A strategy that stops completely after one board wipe
You do not need to remove all commander synergy. That would defeat the point of the format. But your cards should still do something when the commander is unavailable.
A sacrifice deck may need several sacrifice outlets. A token deck may need more than one payoff. A graveyard deck should have a plan for rebuilding after graveyard removal.
Redundancy is less exciting than another clever synergy card, but it wins more games.
Test Card Draw, Interaction, and Recovery
Commander decks often fail in the middle of the game rather than at the beginning.
The deck casts its commander, plays two support cards, and then runs out of material. It looks active for a few turns, but every removal spell sends it further behind.
During each test, note when you gain access to extra cards. This can include traditional draw spells, impulse draw, creature-based draw engines, graveyard recursion, or repeatable card selection.
Then look at your interaction.
Can the deck answer:
- A large creature
- A dangerous artifact or enchantment
- A graveyard strategy
- A combo piece
- A protected commander
- A board that has become too large to manage one card at a time
You do not need an answer to everything. But you should know what the deck cannot handle.
Finally, simulate a setback. Put your creatures into the graveyard as though someone cast a board wipe. Remove your commander. Destroy your strongest engine piece.
How quickly can the deck rebuild?
A deck that performs well only when nobody interferes is not finished. It is giving a presentation.
Use Proxies Before Buying Expensive Cards
Digital testing is useful, but it cannot fully reproduce a multiplayer Commander game.
Real games introduce threat assessment, politics, hidden information, removal, counterspells, and opponents who are deeply committed to preventing your carefully planned turn from happening.
This is where proxy cards become useful.
Print or create temporary versions of cards you are considering, sleeve them with consistent card backs, and test the deck with your regular group. Be clear that the cards are proxies and make sure the group is comfortable with them.
Culture of Gaming’s proxy policy positions its printed cards for casual games, personal use, Cube, and playtesting rather than sanctioned tournament play or resale as authentic cards.
Printed playtest cards can be especially helpful when testing:
- Expensive lands
- Reserved List cards
- New combo pieces
- Cards ordered from overseas
- Multiple possible win conditions
- Several versions of the same deck
- A full Commander list before buying singles
Culture of Gaming also offers print-on-demand cards intended to give players readable, sleeve-ready testing pieces without requiring them to manage home printing and cutting.
The point is not to create a permanent shopping list before testing. The point is to discover which cards actually deserve to be on that list.
Play Three Real Games Before Making Major Changes
One game is an anecdote.
Your deck may draw badly. An opponent may have the perfect answer. Someone may keep a questionable hand and accidentally give you seven uninterrupted turns to assemble a combo.
Play at least three games before making major changes. More is better, but three games usually provide enough information to identify the most obvious problems.
After each game, write down:
- Cards that were difficult to cast
- Cards that stayed in your hand
- Cards you were always happy to draw
- Times you ran out of cards
- Threats you could not answer
- Turns when you had unused mana
- How the game ended
- Whether the deck matched the expected power level
Pay attention to cards that repeatedly disappoint you.
A card can be powerful and still be wrong for the deck. Maybe it costs too much. Maybe it requires setup the deck cannot provide. Maybe it duplicates an effect you already have. Maybe it encourages a line of play that does not support the main strategy.
Commander players are very good at explaining why a card could be useful. Playtesting tells you whether it actually is.
Change Only a Few Cards at a Time
After testing, resist the urge to replace 20 cards.
Large revisions make it difficult to know what improved the deck. They can also create new problems that have nothing to do with the original issue.
Start with the clearest weaknesses.
If the deck misses land drops, adjust the mana package. If it runs out of cards, improve card advantage. If the commander keeps getting removed, add protection or reduce commander dependence.
Change three to five cards, then run the tests again.
This cycle is slower than rebuilding the entire list after every loss. It is also far more useful.
A Simple Commander Deck Testing Scorecard
Use this table after several goldfish tests and real games.
| Area | Healthy Sign | Problem Sign |
|---|---|---|
| Opening Hands | Most hands have mana and early action | Frequent mulligans or uncastable hands |
| Mana | Colors arrive when needed | Spells remain stranded in hand |
| Curve | Useful plays across several turns | Too many expensive cards |
| Card Draw | Hand stays functional | Deck runs out of material |
| Interaction | Answers common threats | Must hope opponents solve problems |
| Commander Reliance | Deck functions without commander | One removal spell stops the deck |
| Recovery | Can rebuild after disruption | Board wipe effectively ends the game |
| Win Condition | Clear and achievable | Deck creates value but cannot finish |
| Power Level | Games feel competitive and appropriate | Deck overwhelms or cannot keep up |
You are not looking for a perfect score. You are looking for repeated weaknesses.
What to Cut First
When a deck needs space, start with cards that create the least real value.
Good candidates include:
- Narrow cards that work in only one situation
- High-cost cards that do not affect the board immediately
- Redundant win-more effects
- Pet cards that never survive the cut discussion on merit
- Synergy pieces that require several other cards
- Tutors without worthwhile targets
- Lands that enter tapped without providing enough value
- Cards included because another deck uses them
Do not cut all personality from the deck. Commander is supposed to leave room for unusual cards and personal choices.
But make those choices intentionally. A pet card should stay because you enjoy playing it, not because you have invented a legal defense team for it.
Final Thoughts
The best time to discover that a $40 card does not belong in your deck is before buying it.
A structured Commander playtest will not predict every game. Multiplayer Magic has too many variables for that. But testing can show whether your deck produces mana, advances its plan, draws enough cards, handles disruption, and fits the games you actually want to play.
Start with 20 opening hands. Goldfish the first five or six turns. Then use proxies to test the list in several real games.
Make small changes and repeat the process.
Eventually, the deck stops feeling like a pile of promising cards and starts behaving like a deck. That is the point where buying the final list makes sense.
FAQs
How Many Times Should I Playtest a Commander Deck?
Draw at least 20 opening hands, run several five-turn goldfish tests, and play three to five real games before making a large purchase. Complex or expensive decks deserve more testing.
Can I Playtest a Commander Deck Online?
Yes. Most major deck-building platforms offer sample-hand or playtest tools. These are useful for mana, sequencing, and early-turn testing, but they cannot fully reproduce multiplayer interaction and threat assessment.
Should I Test With Proxies?
Proxies are useful for casual playtesting when your group agrees to them. Clearly identify proxy cards and do not use player-made proxies in sanctioned events.
What Is the Most Important Part of Commander Playtesting?
Consistency. The deck should reliably produce mana, make relevant plays, and advance its strategy. A powerful card does not help much if the deck rarely casts it.
How Do I Know When a Commander Deck Is Finished?
Commander decks are rarely permanently finished. But a list is ready to buy when it consistently functions, fits its intended power level, recovers from normal disruption, and no longer contains several cards you are uncertain about.
Should I Goldfish a Control Deck?
Yes, but goldfishing provides less information for reactive decks. Focus on mana development, card draw, and whether you can hold up interaction while advancing your board. Real games will still be necessary to evaluate the deck properly.
