60-Card Constructed Deck

A 60-card constructed deck is the standard deck configuration used across the major non-singleton Magic: The Gathering formats — Standard, Pioneer, Explorer, Historic, and Timeless. The rules require a minimum of 60 cards with no upper limit, though virtually every competitive player builds as close to 60 as possible.

Within those 60 cards, you can run up to four copies of any individual card — except basic lands, which have no copy limit. Getting to the right card at the right time is what the whole format is built around, and 60 cards is the number that gives you enough consistency without bloating the deck.

Why 60 Is the Magic Number

Running exactly 60 cards maximises your chances of drawing the cards you need. Every card you add beyond 60 dilutes the deck and reduces your probability of seeing your best cards in any given game. Running 61, 62, or more cards isn’t illegal — it’s just worse, and experienced players essentially never do it.

The four-of limit encourages strategic redundancy without making draws completely deterministic. When you run four copies of a card, you’ll see it in roughly 40% of opening hands — reliable enough to build around, but not guaranteed.

Deck Construction on MTG Arena

Arena enforces the 60-card minimum and the four-copy limit automatically — the client won’t let you queue with an illegal deck. In best-of-one (Bo1) formats, your 60-card main deck is everything. In best-of-three (Bo3), you can bring a sideboard of up to 15 additional cards and swap them in between games.

The sideboard is where a lot of competitive depth lives in Bo3 — the right 15 cards can dramatically shift your matchup percentages against the field. New Arena players often overlook sideboards entirely, which is fine in casual Bo1 play, but leaves a significant edge on the table once you move into ranked Bo3.

60-Card vs Singleton Formats

The 60-card format is quite different from singleton formats like Brawl or Commander, where each card can only appear once. In 60-card constructed, consistency is the goal — you build around redundancy, running multiple copies of your best cards to see them reliably. In singleton formats, variety and flexibility take over. If you’re used to one structure and moving to the other, expect your deckbuilding instincts to need some recalibration.