If you’re new, Commander can seem dense. This primer breaks down everything you need to know to understand the format and start playing.

Key Takeaways

  • Commander is a 100-card singleton format for four players. Each deck is built around one legendary creature called your Commander.
  • Your Commander’s color identity limits which cards you can include. No blue or green cards in a black-red deck.
  • The Commander Tax (two extra mana each time your Commander is recast) is a deliberate balance mechanic, not a punishment. Understanding why it exists helps you plan around it.

The Basics: 100 Cards, One Commander, 40 Life

Commander is a multiplayer format for four players, though it works with two to six. Each player builds a 100-card deck centered on a legendary creature called their Commander. According to Wizards of the Coast, Commander is currently Magic’s most popular format in terms of player participation at game stores worldwide.

Your Commander lives in a special zone called the Command Zone and can be cast from there at any time you could normally cast a creature spell. This means it’s always accessible, which is central to how the format works: your commander is the cornerstone of your strategy, not a card you might or might not draw.

You start with 40 life instead of the standard 20. Each deck is a singleton, meaning no two copies of the same card are allowed except for basic lands. This single rule is responsible for most of what makes Commander special. You can’t run four copies of every powerful card, so games feel varied and surprising in a way that tournament formats often don’t.

The Color Identity Rule

Every card in Magic has a color identity, which includes the colors in its mana cost plus any colored mana symbols in its rules text. Your Commander’s color identity defines the pool of cards you can include in your deck.

If your Commander is Kaalia of the Vast (white, black, red), every card in your deck must have a color identity that fits within white, black, and red. You can’t include a blue counterspell or a green ramp spell, even if you have colorless mana to pay for them. Colorless cards, such as most artifacts, are legal in any deck.

The Commander Rules Committee (mtgcommander.net), which governs the format’s rules, introduced the color identity rule to reinforce each deck’s identity and create meaningful constraints on deckbuilding. Those constraints are a feature. A green-white Commander deck and a black-red Commander deck live in completely different design spaces, even before you consider what each Commander individually does.

The Command Zone and Commander Tax

Your Commander starts the game in the Command Zone, not in your library. You can cast it from there at any time you could normally cast a creature spell.

If your Commander is destroyed, exiled, or otherwise removed from the battlefield, you choose: send it to the zone it would normally go to (graveyard, exile, etc.) or return it to the Command Zone. Most players return it to the Command Zone because it means they can cast it again later. But here’s the catch: each time your Commander has been cast from the Command Zone previously in the game, it costs two additional generic mana. That additional cost is the Commander Tax.

If your Commander costs three mana normally and you’ve cast it twice already, the third cast costs seven mana total. This matters for deck planning. You need to build your mana base expecting to pay the Tax at least once in a typical game.

The Commander Tax exists because without it, decks built around cheap, powerful Commanders would just recast them constantly with no meaningful drawback. The Tax creates a real decision: do you send your Commander to the Command Zone and pay the Tax next time, or let it go to the graveyard where you might reanimate it for free? That decision adds strategy. It’s not arbitrary, it’s design doing its job.

21 Commander Damage: The Third Win Condition

There’s a third way to win beyond reducing life totals to zero or opponents drawing from an empty library. If a single Commander deals 21 points of combat damage to one player over the course of the game, that player loses, even if they’re still at 30+ life.

Commander damage is tracked per Commander, not cumulatively across all opponents’ commanders. If Player A’s Commander deals you 10 damage and Player B’s Commander deals you 11, neither has dealt you 21. You’re safe on the Commander damage front. But if that same Commander deals you 11 damage in one game and 10 more in later turns, that second hit puts you at 21 from that Commander and you lose.

This rule makes combat-focused Commanders with evasion (flying, trample, unblockable) a legitimate win condition in a format where everyone starts at 40 life. Understanding threat assessment in Commander partly comes down to tracking which Commanders at the table can realistically get to 21. For a deeper look at how to evaluate threats like this, Threat Assessment: How to Stop Making Bad Blocks is a solid next read.

Why Do People Love Commander?

Commander attracts players who want social, creative, longer-form games. A typical game runs 60 to 90 minutes. Over that span, alliances form and shift, massive plays shake the table, and moments happen that people talk about weeks later.

The singleton rule means you’re always building a unique deck. The multiplayer format means decisions are social as well as strategic. Knowing when to attack, when to hold back, and when to signal a threat to the table is its own layer of skill that doesn’t exist in head-to-head formats.

Because every player is running a different deck with a different strategy, the “best deck” concept barely applies. Commander tables self-regulate: if one deck is consistently winning before anyone else gets to do anything interesting, the table adjusts and focuses pressure on that player. The social contract is part of the format’s design.

How to Start Playing

The easiest entry point is a Commander preconstructed deck, available at game stores and online for approximately $40-50 at retail (prices vary). These decks are ready to play immediately and give you a working template to learn from and customize. You don’t need to understand every card in the deck to have fun on your first night.

If you already have a collection from another Magic format, pick a legendary creature you own, build a 100-card singleton deck around its color identity, and start playing. Commander is forgiving of imperfect first builds. The social nature of the format covers a lot of deckbuilding mistakes that would end you in a competitive format.

Once you’ve played a few games and want to start tightening your deck, Upgrading Precons: Where to Spend Your First $20 walks through exactly how to improve a starter deck without spending a lot. And when you’re ready to understand the rules that new players frequently get wrong at the Commander table, The 10 Rules New Players Get Wrong Most Often covers the ones that come up every single game.

The format is designed to be welcoming. Show up, sit down, and play.

Frequently Asked Questions

How many lands should I put in a Commander deck? Most Commander decks run 36-38 lands plus additional mana ramp from spells and artifacts. A common starting point is 37 lands and 10 ramp pieces. You’ll refine that number as you learn how your specific deck wants to play.

Can I use any card from any Magic set in Commander? Yes, with exceptions. Commander uses a banned list maintained by the Commander Rules Committee at mtgcommander.net. A small number of cards are banned for balance reasons. Otherwise, any card printed in Magic’s history is legal as long as it fits your Commander’s color identity.

What happens if my Commander gets exiled? Can I still get it back? Yes. Whenever your Commander would go to any zone (graveyard, exile, hand, library), you may choose instead to put it in the Command Zone. Exile is no longer a permanent answer to Commanders the way it is in other formats.

Do I have to attack with my Commander, or can it just sit there? Your Commander is just a creature while it’s on the battlefield. You choose when and whether to attack with it, block with it, or use its abilities. Some Commanders are meant to attack; others are meant to sit and generate value while your other cards do the fighting.

What’s the difference between Commander and EDH? Nothing. EDH stands for “Elder Dragon Highlander,” the original name for the format before Wizards of the Coast adopted it officially as Commander. Players use both terms interchangeably. The rules are identical.