Magic: The Gathering is a deep and exciting game, but testing new decks can become expensive. Many deck ideas rely on cards that cost more than a player wants to spend before knowing whether the deck is actually fun or effective.
That is where MTG proxies are useful.
Proxies let players test expensive cards in casual games before deciding whether to buy the real versions. They are especially helpful for Commander, cube, kitchen table Magic, and private playtesting.
If you are building a new deck and want to test the list before making big purchases, Proxy King offers MTG proxies for casual use, collecting, testing, and deckbuilding. For players who also enjoy custom printed Magic-inspired products, PrintMTG.com is another useful resource to know.
Why Playtest With MTG Proxies?
Playtesting helps you find out whether a card actually belongs in your deck.
A card may look perfect in a decklist but feel clunky during real games. It may cost too much mana, overlap with cards you already have, or fail to support your main strategy. On the other hand, a card you were unsure about may turn out to be one of the best cards in the deck.
Using proxies gives you a way to test those cards before spending money.
This is especially important for expensive staples, Reserved List cards, premium lands, and cards that only work in specific strategies.
Proxies Help You Avoid Bad Purchases
Every Magic player has bought a card that did not work as expected. Maybe it was too slow. Maybe it was too narrow. Maybe the deck changed direction before the card even arrived.
Proxies reduce that risk.
Instead of buying the card first, you can test it in real games. If it performs well and you want an official copy, you can buy with more confidence. If it underperforms, you saved yourself from an unnecessary purchase.
This is one of the most practical uses for MTG proxies.
Test the Full Deck, Not Just One Card
When playtesting, it is important to test the full deck idea. A single card does not exist in isolation.
A powerful card may be weak if the deck cannot support it. A combo piece may be useless without enough tutors or card draw. A land may not help if the color balance is wrong. A finisher may not matter if the deck cannot survive long enough to cast it.
Proxies let you test the full list as a complete system.
This gives you a much better understanding of whether the deck works.
Use Proxies for Mana Base Testing
Mana bases are one of the best things to test with proxies because lands can be expensive and difficult to evaluate on paper.
A deck’s mana base determines whether it can cast spells on time. This matters a lot in Commander, where decks often use multiple colors.
By testing proxy lands, you can answer important questions:
Do I have enough sources of each color?
Do too many lands enter tapped?
Can I cast my commander on time?
Does the deck need more utility lands?
Am I running too few lands overall?
A strong mana base can make a deck feel dramatically better.
Use Proxies for Commander Testing
Commander is one of the best formats for proxy playtesting because decks are large, varied, and often built around expensive singles.
You might use proxies to test:
A new commander
A new mana base
Reserved List cards
High-value staples
Combo pieces
Premium removal
Expensive finishers
Cards you own but do not want to move between decks
This helps you decide whether the deck is worth building permanently.
Commander is also a social format, so make sure your playgroup agrees to proxy use before the game starts.
Be Clear With Your Playgroup
Proxy playtesting works best when everyone knows what to expect.
Before playing, tell your group which cards are proxies and why you are using them. Most casual groups are comfortable with proxies for testing, but every table is different.
Some groups allow unlimited proxies. Some allow proxies only for cards you own. Some allow them for playtesting but not for regular games.
Clear communication keeps games friendly.
Do Not Use Proxies in Sanctioned Events
MTG proxies are for casual use, playtesting, cube, and personal deckbuilding. They should not be used in sanctioned tournaments or official events.
If you are playing in an official event, use real cards that meet the event’s rules.
This distinction matters. Proxies are helpful tools for testing and casual play, but they are not replacements for legal tournament cards.
Track What You Learn During Testing
When testing expensive cards with proxies, take notes after each game.
Ask yourself:
Did I want to draw this card?
Was it worth the mana?
Did it help my deck’s plan?
Was it useful in multiple situations?
Did it win the game or just look impressive?
Would I still want it if I had to buy the real copy?
These questions help you make better deckbuilding decisions.
The goal is not just to see whether the card is powerful. The goal is to see whether it is right for your deck.
Replace Weak Cards Slowly
After testing, do not change too many cards at once. If you replace a large portion of the deck after every game, it becomes hard to know which changes helped.
Start with the cards that clearly underperformed. Then test again.
This slower process helps you build a stronger final list.
Proxies Make Better Deckbuilding Possible
MTG proxies are valuable because they make testing easier. They let you explore expensive cards, improve mana bases, try new commanders, and build full decklists before making major purchases.
Used responsibly, proxies can save money and lead to better decks.
They are especially useful for casual Commander, cube, and kitchen table Magic.
For high-quality MTG proxies designed for casual playtesting and deckbuilding, visit Proxy King.