MTG Format Legality Explained: Standard vs Commander

MTG format legality explained in one line: a card is legal when its set is in the format's card pool and the card isn't on that format's banned list. Those are two separate checks, and you run both every time. Standard makes the first one trickier than usual this year, because Wizards skipped the 2026 rotation and the pool kept growing (the full 2026 set schedule lists every set in it).

Pick Standard if you want two-player games built from recent sets. Pick Commander if you want a four-player table and almost every card ever printed, in exchange for stricter deckbuilding rules.

PATCH: Updated Oct 10, 2026: fixed three leftover "18-set" references to Wizards' current count of 20, corrected the Commander table size to Wizards' 3 to 5 players, and added a chart of where each format's card pool starts.

Standard vs Commander legality at a glance

Source: Wizards of the Coast Standard and Commander format pages, Comprehensive Rules 100.2a and 103.4 (September 25, 2026), read October 19, 2026.

Standard: Rotation Explained (and Why 2026 Is Different)

Standard is the format people mean when they talk about rotation. Its pool is a moving window of recent sets: new ones enter, the oldest leave, so you check dates instead of assuming a card stays legal forever.

2026 breaks the pattern. There is no Standard rotation this year, so nothing left when new sets arrived and the pool kept growing. Wizards skipped the 2026 rotation to move it to the first set of each calendar year from 2027 on. That's a schedule change, not a sign Standard has stopped rotating.

The next rotation follows the Prerelease of Nauctis: The Sunken Realm, the first premier set of 2027 (release February 5, 2027), which our MTG Standard rotation 2027 guide covers in full. At that point, Duskmourn and all earlier sets will drop out of Standard. If you're building a deck during 2026, that timing gives you a clear point to consider when deciding whether to invest in cards that are approaching the edge of the pool. It also explains why a guide written before 2026 can give an incomplete picture of the format today.

Deck construction is simpler than Commander's (the numbers are in the table above). The one trap is that the four-copy limit counts card names, not effects, so check the exact cards in the list before you submit it.

Every new Standard-legal set, like Reality Fracture, joins the current pool rather than pushing an old set out in 2026. Source: Scryfall card image.

A card can come from a set that is still in the Standard pool and still fail the separate banned-list check. Going the other way, a card that feels old or unfamiliar isn't illegal until you've checked which set it came from and whether that set is still in the pool.

GODEEPER: See the full Standard archetype breakdown built on top of this no-rotation format. MTG Standard Format Guide: Rotation, Archetypes, Meta →

Commander: A Different Kind of Legality

Commander, also called EDH, approaches legality from a different direction. Its card pool reaches across nearly the entire card pool, but the format adds structural rules that radically change how a legal deck is built. Checking only whether a card was printed in an old or new set won't answer the Commander question.

A Commander deck has exactly 100 cards, including its commander. It uses singleton construction, which means one copy maximum of any card by name, with basic lands excepted. Every card also has to fit the commander's color identity. That color-identity check is separate from the question of whether the card's set belongs to the broad Commander pool, so a card can be available in the wider pool and still not fit a particular commander's deck.

It's also a multiplayer format with a higher starting life total, which is why a legal Commander deck is built and played so differently from a 60-card deck. None of that replaces the deck checks, though: the 100-card count, the singleton rule and color identity come first.

A Commander card like Doctor Doom, King of Latveria has to fit your commander's color identity, a check that has nothing to do with Standard legality. Source: Scryfall card image.

Commander also has its own banned list, separate from Standard's. A card can be legal in Standard's card pool but banned in Commander, or legal in Commander while banned in Standard. The format's age, its multiplayer setting, and its card-pool breadth do not allow you to transfer a legality answer from one format to another.

GODEEPER: Color identity is one of the fastest ways for an otherwise playable card to fail a Commander deck check. MTG Color Identity Explained: What Actually Counts →

Step-by-Step: How to Check if a Card Is Legal in Your Format

1. Identify your format. Start with the event, decklist, or table you're preparing for and name the exact format: Standard, Commander, Pioneer, Modern, Pauper, Legacy, or Vintage. The same card can face different card-pool and banned-list rules in each one.

2. Check the card's set against the format's legal pool. Confirm which set the card belongs to, then compare that set with the format's defined pool. For Standard, that means the current list on Wizards' Standard page and the rotation schedule; for nonrotating or broad-pool formats, use that format's own starting point or card-type restriction.

3. Separately check the format's banned or restricted list. Do not stop after confirming that the set is legal. Banned and restricted lists exist separately per format and can change independently of rotation, so a card in the right pool still needs this second check.

4. Compare the answer only within the format you are playing. A card can be legal in one format and banned in another, independently of whether both formats include its set. Standard legality does not establish Commander legality, and Commander legality does not establish Standard legality.

5. Recheck after a banned-list update. Legality changes over time, and a list update can alter the answer without any new set release. Before an event, revisit the current card-pool and banned or restricted information, especially if the last check was made before an announcement.

Where Standard Sits Compared to Modern, Pioneer, and Legacy

Formats sit on a spectrum. At one end is Standard, which uses the newest sets and rotates, although 2026 is an unusual no-rotation year. At the other end are Legacy and Vintage, which draw from nearly the entire card pool ever printed. The format name tells you where to begin, but the exact legality answer still comes from that format's card-pool definition and its separate banned or restricted list.

Pioneer sits between those ends with a fixed starting point in 2012 and sets forward from there. It doesn't rotate, so its pool grows as eligible sets are released. Modern starts with 2003 and moves forward, and it also doesn't rotate. For both formats, the key question is whether the card falls within the stated starting point and whether the format's own list places a separate restriction on it.

Pauper uses a different filter: cards from any set can be considered, but only commons qualify. That means the set date alone won't answer a Pauper legality question. Legacy and Vintage are broad, nearly whole-card-pool formats, while Commander draws from a similarly broad pool and adds the 100-card, singleton, color-identity structure on top. The eternal 60-card formats don't use those Commander construction rules.

Where each format's card pool begins, and what Standard's pool starts with before and after the 2027 rotation. Source: BaseMTG, from Wizards of the Coast format pages and Scryfall set release dates.

This spectrum is useful because it prevents a common shortcut: assuming that “older format” means “anything goes.” Every format still has a definition, and every format can have its own banned or restricted list. Think of legality as a combination of the pool, the list, and, when relevant, the deck's construction rules.

Tips for Tracking Format Legality Over Time

• Check a card's Scryfall page, which lists per-format legality directly. Treat that as a fast starting point, then confirm the current format announcement or list when the answer matters for an event.
• Keep the card-pool check and the banned-list check separate in your notes or deck-building process. This makes it easier to see whether a problem is caused by rotation, a format-specific ban, or a Commander construction rule.
• Remember that banned-list announcements are separate events from set releases. No new set release, or no news about a set, does not mean there have been no legality changes.
• Recheck your list after a banned or restricted update and before playing an event. The date you last checked matters, particularly during a year with an unusual Standard schedule.

Our Take: Count the Sets Yourself

The 20-set pool is already a point of argument. In an r/magicTCG thread from August 11, 2026 titled "21 sets in standard is a massive problem," the original poster wrote that "Currently standard has 18 sets, but by the end of the year we will have 21 sets." One commenter joked that one department wanted a "3 year rotation!" while another wanted "7 sets a year!" That is a player's opinion, not a Wizards statement, but the numbers are the useful part: 18 in August, 20 on Wizards' page now, and 21 in the thread's count once Star Trek arrives.

Our practical read is that the set count is the one number in this article that will keep moving, so don't copy it into a deck notes file. Open Wizards' Standard page the week of the event, count the "What Sets Are Legal in Standard?" list, then run the banned-list check. The Arstall video below is a longer walk through which sets leave in 2027; the dates in this article come from Wizards' announcement, not from the video.

Related Reading

• How to Play Magic: The Gathering: Rules and Basics: the core rules this legality framework builds on.
• MTG Mana Base Guide: The Land Count Formula Explained: deck-building math that applies once you've confirmed your cards are legal.
• Magic: The Gathering 2026 Set Release Schedule Guide: which sets are actually in the current Standard-legal pool.
• MTG Standard Banned List: All 14 Entries (October 2026): Every banned card with cost and set, plus what Wizards said on August 10.
• MTG Universes Beyond Explained: Standard Legality in 2026: Which Universes Beyond products are Standard legal, and which stay Eternal-only.

References

• MTG Standard Format, Wizards of the Coast
• Standard in MTG: The Ultimate Format Guide, Draftsim
• MTG Commander Format, Wizards of the Coast
• Aligning the Universes: Making All Our Sets Legal in All Our Formats, Wizards of the Coast
• Everything Announced for the Magic Multiverse in 2027, Wizards of the Coast
• Magic: The Gathering Comprehensive Rules (September 25, 2026), Wizards of the Coast