How to Playtest a Commander Deck With MTG Proxies Before Buying Cards

TLDR

If you want to playtest a Commander deck with MTG proxies before buying cards, start with a complete digital list, proxy the expensive maybes, run 5 to 10 real games, and track what actually happens. Do not buy the pricey cards until the deck proves it needs them.

The goal is not to proxy every shiny staple because the internet yelled “auto-include.” The goal is to find out which cards are actually good in your deck, with your commander, at your table.

Why Playtesting With Proxies Saves So Much Money

If you play Commander long enough, you eventually build a deck the expensive way.

You pick a commander. You watch a few videos. You browse EDHREC. You add every card that sounds remotely useful. Then you buy 38 singles, sleeve them up, play three games, and realize half of them are just cardboard passengers.

That is how a $60 upgrade plan becomes a $240 lesson in impulse control.

This is exactly why it makes sense to playtest a Commander deck with MTG proxies before buying cards. Proxies let you test the deck in real games before you commit real money to cards that might not survive the first revision.

A good proxy testing process helps you answer questions like:

Is this card actually good, or did it just look clever in the deckbuilder?

Does the mana base work?

Do I have enough card draw?

Does the deck do anything before turn four?

Are my expensive staples fixing a real problem?

Is this deck fun enough to keep upgrading?

That last one matters. A deck can be technically strong and still feel like sorting receipts with extra steps.

Start With One Clear Deck Goal

Before you print or order proxies, define what the deck is supposed to do.

Not “win games.” That is too vague. A ham sandwich also wants to win games if you put a commander sleeve on it.

Write one plain sentence:

“This deck wants to make artifact tokens and win through sacrifice payoffs.”

“This deck wants to play big sea monsters and survive long enough to cast them.”

“This deck wants to turn small evasive creatures into a Voltron-style clock.”

“This deck wants to reanimate expensive creatures without becoming a cEDH deck.”

“This deck wants to feel like a horror movie and still function at a casual table.”

That sentence becomes your filter. Every proxy you test should support that plan, protect that plan, accelerate that plan, or fix a weakness that keeps the plan from happening.

If a card is just generically powerful, be suspicious. Commander is full of generically powerful cards. That does not mean your deck needs all of them.

Build the First List Digitally

Before paper enters the room, build the deck in a digital deckbuilder.

Moxfield, Archidekt, and similar tools are useful because they let you see the boring stuff that decides games:

Mana curve

Color requirements

Card type balance

Land count

Ramp count

Draw count

Removal count

Average mana value

Price

Potential weak spots

The digital list is your first draft. Do not treat it like scripture. Treat it like a grocery list made while hungry.

At this stage, mark cards in three groups:

Cards you already own

Cards you know you want

Cards you are testing

That third group is where proxies help. If a card costs real money and you are not sure it belongs, proxy it first. If a card is cheap and obvious, buying it outright is fine. Nobody needs a six-week testing protocol for a 19-cent removal spell.

What Cards Should You Proxy First for Testing?

When you playtest a Commander deck with MTG proxies, proxy the cards that carry the most uncertainty or cost.

Good proxy testing candidates include:

Expensive lands

Tutors

Fast mana

Premium removal

Popular engines

Combo pieces

High-price theme cards

Cards that only work in one specific deck

Cards that look amazing but might be too slow

Cards that might push the deck above your table’s power level

Bad proxy testing candidates include:

Basic lands

Cheap staples you already know you need

Bulk commons

Cards you only added because the list had one empty slot

Cards that make the deck miserable for your group

There is a difference between testing a card and trying to sneak power into a casual pod. Proxying a shock land to fix colors is one thing. Proxying a full optimized fast mana package into a low-power table is another. That second one is how you get four people suddenly very interested in checking their phones.

Run the Opening Hand Test First

Before you play full games, run at least 20 opening hands.

This is the fastest way to find obvious deckbuilding problems.

For each hand, ask:

Can I keep this?

Do I have two to three lands?

Can I cast my early ramp?

Do my colors work?

Do I have something useful to do before turn three?

Does this hand actually point toward my deck plan?

If too many hands fail, do not blame bad luck. Bad luck is real, but so is a bad mana base wearing a fake mustache.

Common fixes after opening hand testing:

Add more lands

Add cheaper ramp

Cut double-pip cards in splash colors

Reduce the average mana value

Add more two-mana plays

Replace colorless utility lands with colored sources

Cut cute cards that do nothing early

This step is not glamorous. It is also where a lot of decks get fixed.

Goldfish the First Four Turns

Goldfishing means playing the deck by yourself without opponents. It will not tell you everything, but it will tell you whether the deck can function.

Run 10 goldfish games and play the first four turns.

Track:

When you cast ramp

When you cast your commander

Whether you miss land drops

Whether you run out of cards

Whether the deck starts doing its thing

Whether your hand gets stuck with expensive cards

For Commander, the first four turns matter because they decide whether your deck joins the game or politely watches from the corner.

If your commander costs five or more mana, you need to know whether your ramp actually gets you there. If your commander costs two or three, you need to know whether you can protect it or follow it with meaningful plays.

Goldfishing will not reveal how your deck handles removal, politics, or three opponents doing nonsense. But it catches the most embarrassing problem: the deck not working at all.

Play Real Games Before Buying the Expensive Cards

After digital testing and goldfishing, play real games with the proxies.

Aim for at least 5 games before buying anything expensive. If the card is very pricey or very deck-specific, 10 games is better.

During each game, track simple notes:

Cards that felt great

Cards that sat dead in hand

Cards that were win-more

Cards that fixed a real problem

Cards that annoyed the table

Cards you wished were something else

Turns where you ran out of cards

Turns where your mana failed

Turns where you had no interaction

You do not need a spreadsheet unless you enjoy turning hobbies into office work. A notes app is enough.

After a few games, patterns show up. The same clunky card keeps getting stuck in hand. The same draw spell keeps saving you. The “must-have” engine turns out to be too slow. The boring two-mana rock quietly does more work than the mythic rare with a paragraph of text.

This is the entire point.

Use the Three-Game Rule for Maybes

A card does not have to impress you in every game. Commander has variance. Sometimes you draw the wrong half of the deck. Sometimes the blue player says no because blue players need hobbies too.

But after three games where a card appears, you should have a better read.

Ask:

Did I want to cast it?

Did I have the mana for it?

Did it advance my plan?

Did it solve a problem?

Did it make the game better?

Did it make the table groan in a bad way?

Would I be happy if this were the real card I bought?

If the answer keeps being “not really,” cut it.

This is especially important for expensive cards. A $40 card should not be in the deck because it was theoretically impressive in a vacuum. Commander is not played in a vacuum. It is played in a chaos swamp with three other people making poor decisions.

Test Power Level, Not Just Card Quality

A card can be good and still wrong for your deck.

A card can be legal and still wrong for your pod.

A proxy can make that obvious before you spend money.

Commander Brackets and Game Changers are useful here because they give you a cleaner language for power expectations. If your test cards include powerful tutors, resource engines, free interaction, or other high-impact cards, say that before the game.

Try this:

“This is a proxy test version. It is aiming for upgraded casual, not cEDH. I’m testing three expensive cards and can swap decks if this feels too much.”

That one sentence prevents a lot of weirdness.

If your proxy package makes the deck too strong, you have three options:

Keep the cards and play at stronger tables

Cut the cards and keep the deck casual

Build two versions of the list

That third option is underrated. A casual version and a high-power version can share the same commander without creating constant table confusion.

Separate “Fun” From “Effective”

This is where proxy testing gets honest.

Some cards are effective but not fun. Some cards are fun but bad. Some cards are both. Those are the keepers.

When you playtest a Commander deck with MTG proxies, track how the deck feels, not just whether it wins.

Did the deck create interesting turns?

Did you have choices?

Did opponents get to play?

Did the deck recover after removal?

Did the theme show up?

Did you enjoy the same play pattern repeatedly?

Did the game end in a satisfying way?

A deck that wins by doing the exact same thing every time can get old fast, especially in casual Commander. Proxy testing lets you catch that before you buy the whole package and emotionally commit to a deck you secretly find tedious.

Use Proxies to Test Art Direction Too

For Trinket Kingdom specifically, proxies are not only about card function. They are also about visual cohesion.

If you are building a themed Commander deck, proxy testing can help you decide the deck’s visual lane before you order the full version.

Ask:

Should the deck look dark, bright, cosmic, horror-themed, anime-inspired, medieval, sci-fi, or painterly?

Should the commander be the only flashy card?

Should lands match the deck mood?

Should tokens share the same art direction?

Should staple cards get custom treatments or stay simple for readability?

This is where a few test proxies can prevent a full deck from looking like twelve art styles got trapped in an elevator.

Gameplay comes first. But if the deck is going to be custom, it should look intentional.

When Should You Finally Buy the Real Card?

Buy the real card when it passes three tests:

It performs well in actual games

It fits the power level you want

You would still want it after the excitement wears off

That last test saves money.

Some cards are exciting because they are new to you. After five games, the excitement turns into either “yes, this belongs here” or “why did I think this was necessary?”

For expensive staples, I would only buy after the card proves one of these things:

It fixes a repeated problem

It enables the deck’s main plan

It improves consistency without ruining the pod

It is useful across multiple decks

It is a personal favorite you will enjoy owning

Cross-deck use matters. A pricey land or flexible interaction spell may be easier to justify than a narrow combo piece that only works in one build.

When Should You Keep the Proxy Instead?

Sometimes the right answer is to keep the proxy.

That is especially true for casual-only cards, theme decks, cube cards, and cards you do not plan to use in sanctioned events.

Keep the proxy if:

Your group allows it

The card is too expensive to justify

You already own one copy and do not want to move it between decks

The custom art is part of the deck’s appeal

The card is only for casual testing

You are still tuning the deck

You are building a full custom theme deck

Just be clear with your group. Proxies are easiest when nobody is surprised.

A Simple 10-Game Proxy Testing Plan

Here is the clean version.

First, build the full digital list.

Second, mark expensive maybes.

Third, proxy only the cards you are testing.

Fourth, run 20 opening hands.

Fifth, goldfish 10 early-game sequences.

Sixth, play 5 real games.

Seventh, cut cards that underperform.

Eighth, play 5 more games if the deck still feels uncertain.

Ninth, decide what to buy, what to proxy, and what to cut.

Tenth, order the final version once the list stops changing every 11 minutes.

That process sounds slower than impulse-buying singles at midnight. It is. That is why it works.

Final Verdict

The best reason to playtest a Commander deck with MTG proxies is simple: it keeps you from buying cards your deck does not need.

Proxies let you test the expensive stuff, tune the mana, check the power level, refine the theme, and figure out whether the deck is actually fun before you spend real money.

The smart move is not “proxy everything forever” or “never proxy anything.” The smart move is to test first, buy later, and build decks that make sense for your table.

Your wallet will survive. Your deck will be better. And your maybe pile will stop looking like a financial crime scene.

References and Links

Trinket Kingdom homepage:
https://trinketkingdom.com/

Trinket Kingdom blog:
https://trinketkingdom.com/blog/

Trinket Kingdom custom MTG proxy product example:
https://trinketkingdom.com/shop/darth-vader-mikeaus-the-unhallowed-star-wars-full-art-custom-mtg-proxy-card/

Wizards of the Coast proxy policy:
https://magic.wizards.com/en/news/announcements/proxies-policy-and-communication-2016-01-14

Wizards of the Coast Commander format page:
https://magic.wizards.com/en/formats/commander

Wizards of the Coast Commander Brackets Beta Update, February 9, 2026:
https://magic.wizards.com/en/news/announcements/commander-brackets-beta-update-february-9-2026

Archidekt MTG deck builder:
https://archidekt.com/

EDHREC Commander recommendations:
https://edhrec.com/

TopDecked MTG deck tester and simulator:
https://www.topdecked.com/simulate