11 Essential MTG Sealed Deck Rules and Tips [Guide]

Last updated on October 17, 2025

Ghen, Arcanum Weaver | Illustration by Kieran Yanner

Are you a beginner who wants to experience MTG in the fairest and easiest way possible? Are you a seasoned player looking to practice your deckbuilding skills? Well, look no further! The Sealed format is for you to master.

I’m here to give you guys some tips on the Sealed format today. It’s a highly competitive and extremely fun format that lets you use whatever you get in your booster packs to build yourself a killer deck. This format is a personal favorite of mine since each player has equal resources and will battle it out with their deckbuilding skills.

So, let’s begin!

What is Sealed?

Seal of the Guildpact | Illustration by Franz Vohwinkel

Sealed is a limited format where you get six unopened packs to build a deck with a minimum of 40 cards. Of course, that includes an unlimited number basic lands which you're allowed to add to your deck from outside the packs.

This format is one of the best starting points for Magic because you only need six boosters and it’s a great way to learn and to improve your deckbuilding skills. In fact, it is the de facto format for Magic prereleases, which are the way many people are first introduced to organized MTG!

Sealed vs. Draft

Sealed and draft are very similar formats with one key difference: whether or not you build your deck on-the-fly or from a static pool of cards.

I'm often asked which limited format to play: Sealed or Draft? My personal answer for that is you should play both. Sealed and Draft each bring something unique to the experience.

If you want for a fun way to start your MTG collection, Sealed is the format for you.

Difficulty

Sealed is significantly easier because you don’t have to draft cards. It lets you use all the cards in your packs to build your deck from there. Normally the deck you build depends on the most powerful cards in your card pool and you build from there.

With that said, this is the why Sealed is the best entry point for beginners. You have to focus your strategies on deckbuilding.

I find Draft to be very difficult, but in a fun way. What makes Draft difficult is you can only pick one card when you open a pack, pass the pool to the player on your left, and get the card pool from the player on your side. Basically, you have to choose which card has better synergy with the cards you’ve already drafted. This process can be very daunting for beginners because it challenges your card evaluation, knowledge of the overall format, and ability to deckbuild on-the-fly.

Plus, the time pressure makes people really nervous!

By the way, we at Draftsim can help you make better decisions and help you improve your drafting and Sealed deckbuilding skills. Check out our free MTGA tracker Arena Tutor! If you're struggling and want to get better, the tracker will make suggestions about what cards to pick and give you ratings to help you build your deck.

Arena Tutor suggests cards that may synergize well with your previous picks.

Cost

The only downside I see in Sealed is the cost. You have to use six packs versus the three boosters you use in Draft. So have to use 48 packs in total to support eight players in a tournament setting for Sealed, while you only need 24 boosters to support an 8-player Draft tournament.

The Rules: How to Play Sealed

Rune-Sealed Wall | Illustration by Rockey Chen

First, each player needs six unopened packs of the same set.

Any Limited format deck should contain a minimum of 40 cards. This means that there’s no maximum size. I once used a 41-card deck in a competitive tournament, and it definitely gave me some edge, but it depends on the cards you play. This is a move reserved for those with lots of experience. Certain sets like Theros Beyond Death‘ Drafts lend themselves to decks with more than 40 cards.

The cards that aren’t used in the deck are counted as your sideboard. How great is that? You can either sideboard normally in between games or you can totally change your deck based on your card pool and opponent's deck, but we’ll get into it later.

You’re also not restricted to only four copies of any one card! This means that if you’re lucky and managed to open five Assassinates in your Time Spiral Remastered packs, you can totally use all five in your deck! I can tell you right now, removal cards and especially the instant ones that can be used anytime you have priority are strong in Sealed.

Building a Sealed Deck

This is the part where it gets interesting.

There are a few things you have to consider when building your deck. Here are some of the things I look for in my card pool when building Limited decks.

#1. Bombs

The first thing I do after I open my packs is look for bombs. These are the cards that you can rely on to win the game. Bombs can generally win games if they’re not answered or killed.

Cards like Ouroboroid, Vivi Ornitier, and Kotis, the Fangkeeper. These cards are some of the most powerful to have and very difficult to answer. They generate so much value and leave your opponents scrambling on how to deal with them.

#2. Removal

Basically, removal cards are your kill spells to answer your opponent’s massive bomb creatures or powerful planeswalkers. Cards like Abrade, Stroke of Midnight, and Withering Torment. These are the cards you rely on to stop your opponents from winning the game by killing their stuff, and the less mana you spend to do it, the better.

#3. Mana Fixers

Most of the time you’ll have to play two to three colors. Sometimes your card pool won’t have the most sought-after lands that produce multiple colors like Valgavoth's Lair and Gloomlake Verge.

If that’s the case, we can rely on mana fixers. These cards can help you get the land you need or creatures that produce mana of any color. Some great examples of these cards are Terramorphic Expanse, Patchwork Banner, and Summon: Fenrir.

#4. The Mana Curve

This part of the deck is usually one of your limitations: a Sealed deck contains around 16 to 18 lands depending on your mana curve. In deckbuilding, you choose the best 22 to 24 cards in your pool, but it doesn’t simply stop there. You have to mix the different mana costs of your cards so that you can consistently play a card every turn.

You might ask, “I have a lot of 4- and 6-drop bombs, why can’t I just use them all?” The answer is your opponent will tempo you out if you don’t have a turn 1 to turn 3 play. You might not draw the lands you need to play those high-cost cards at all in some cases. No matter how good your cards are, if the curve isn’t well-balanced then it’s not playable.

Sample Deck and Lands

Let’s take a look at a sample deck and hand in Arena Tutor to get a better idea of what I’m talking about:

This deck has a decent mana curve with a high chance to play cards every turn. There’s also a good mix of creatures, lands, and removal. I used 17 lands here because I don’t want to miss my drops until turn 5 or 6. Thankfully I have cards like Perigee Beckoner that has uses before I get to a fifth land and Uthros Psionicist to reduce my costs on second spells.

You can have a deck with 16 lands if your biggest card is a 4- or 5-drop and you have a lot of 1- and 2-drops. This’ll keep your deck consistent with casting creatures and lowers the chance of flooding.

There’s also an option to play 18 lands in your Limted deck. You can do this if your deck is playing heavy 6- to 8-drop bombs. This way you’re more likely to be able to hit your lands early on.

#5. The Creatures

A Sealed deck should normally have around 14 to 17 creatures. In Limited, the most common way to get a victory is to attack your opponent with your creatures. Frequently, the more aggressive your deck is, the more creatures you need.

Sealed games tend to go long because they’re fairly even. Decks are unlikely to have the right number of copies or a critical mass of cards to execute a streamlined, synergy-based gameplan.

Each player’s creatures tend to stare at each other and not attack most of the time. But there’s a solution to this: evasion! Think flying, menace, unblockable, etc.

I love to play creatures with flying in Limited like Monoist Circuit-Feeder, Qarsi Revenant, or Delney, Streetwise Lookout. These creatures win the most as they can’t be blocked by those land-locked huge creatures. If your opponent can’t block or kill your fliers, then you are on your way to win!

#6. Card Advantage

As I mentioned, Sealed games tend to be stalled out and last longer. One of the best way to gain the upper hand are cards that give you card advantage. These are the cards that replace themselves, draw you more cards, or even retrieve stuff from your graveyard.

Some examples of these are Terrasymbiosis, Tersa Lightshatter, and Blood Beckoning.

#7. Tricks/Interaction

Ah, this is one of my favorite types of cards to play in a Limited format. Tricks or ways to interact with your opponents include counterspells, bounce spells, protection spells, and pump spells like Unravel, Overprotect, Haste Magic, Emergency Eject, and Artful Takedown. These will be harder to predict for your opponent and can turn the tide around in an instant.

When I played at a Sealed tournament, my unblocked 1/1 creature suddenly became a 5/1 lethal attacker thanks to Invigorated Rampage and ultimately won me the match.

Employ these cards sparingly, however, because they are very situational and you might sometimes not have a use for them.

Sideboard Guide

This is another interesting part of Limited formats. You might ask, “Why is this interesting? We’re used to sideboarding in Constructed.” Well, in the case of a Limited format, all the cards in your pool that aren’t in your deck are considered your sideboard cards!

Yep, there are plenty of leftover cards for you to choose from and you can definitely change the whole dynamic of your deck in games two and three.

#8. Situational Cards

These cards are specifically tailored to do something specific like destroy artifacts and enchantments or kill flyers. Think Drill Too Deep, Undergrowth Leopard, and Requisition Raid.

They may only be good for game 2 or game 3 of a traditional match on Arena or tabletop because you’re not sure if your opponent will have high-impact artifacts/enchantments or if their main deck is full of fliers.

What if you still include them in your main deck just to be prepared? Well, if your opponent doesn’t have any artifacts or care about charge counters and you draw a Drill Too Deep, then it would be a waste of the draw. Drill Too Deep is now a dead card that doesn’t have a purpose.

So, it’s better for situational cards to stay in the sideboard. If you have something like Requisition Raid with the spree though, chances are you can safely slide it into your main deck since you can adjust the spree and get decent uses out of it.

#9. Switch It Up

Sometimes you have good cards in three different colors, but your mana base can only accommodate two and you don’t want to force a third. Changing your deck identity is entirely possible.

Let’s say you have a Golgari deck but game 2 comes along and it seems like a good idea to switch over to a Simic creature deck with counterspells to better match your opponent. You can definitely do that as long as you’ve got the right pieces for the build in your card pool.

Remember you still have to have a functional deck that checks all the boxes checked above, though.

Opening six booster packs will give you approximately 78 to 80 usable cards. You can imagine how big your card pool will be and you can definitely assemble two or three pretty unique decks between all those cards.

#10. Learn More

Sideboarding really is an entire topic in and of itself. If you want to become an expert at it, I recommend this course by Magic great Seth Manfield:

Spikes Academy also has a course from Draft great Ben Stark about limited in general. This includes an entire section with several modules about Sealed.

#11. Where and How to Practice Sealed

Personally, I use our very own simulators to practice how I build my Sealed decks. Draftsim is no doubt the best tool out there (and will also give you power ratings for each card so that you can know what cards to build around). I’m not biased at all.

A Sealed UB sacrifice deck built by our Draft/Sealed simulator.

When you’re comfortable enough with your deckbuilding skills, you can head onto MTG Arena and play a Sealed event to test yourself on how much you have improved! Again, Arena Tutor will help you with deck suggestions if you run it while you’re playing and want some extra help.

You can also switch from MTG Arena to MTG Online for some Sealed tournaments and dominate there if that’s more your thing. At your house, any time you have six unopened packs for each player you’re good to go!

You can also upload and submit a decklist from Arena to Draftsim. I encourage you to share your decks or card pool with your friends and discuss how to improve your deckbuilding skills. Playing Magic is a fun experience that should be shared with everyone for the community to grow and get more people to play with!

Where to Play Sealed

This is one of the easier Limited formats you could play at your kitchen table with as little as one opponent. There's nothing like opening up packs with people that are just as excited as you for new cards.

In-store Prerelease

Most local game stores run a prerelease during the week before a set's official release, these timely events are generally Sealed, with modest prizes and a very even playing field. While supplies last, many an LGS award you with a promo, prerelease-stamped card you add to your pool.

Sealed on Arena

The Sealed events on Arena pop up while a set is still fresh, usually a few days before the official paper release. It's premium in that you can't use gold to enter, and if you ask me, much more fun than spending the 2,000 gems on 10 packs in the Arena store with no chance to win your entry fee back.

Team Sealed

Memorial Team Leader | Illustration by Andrew Mar

Oh, I almost forgot Team Sealed! This is a variation of the format that lets you play with your friends. Basically, each of the three players in your team will have to create a 40-card deck from a pool of only 12 booster packs.

You might wonder, “Isn’t that a bit difficult?” The answer is absolutely, but it’s incredibly fun! This format is challenging in the best way because you and your friends are in it to win it.

Your team of three will battle another team of three players. When two players from the same team win their individual matches, the whole team wins the match. Team Sealed is definitely a fun and unique way to play Sealed that lets players compete in a fresh environment with their best friends.

Wrap Up

Ingenious Mastery | Illustration by Cristi Balanescu

So that’s it for Sealed today, I hope you guys learned something new. Limited formats are, in my opinion, one of the fairest format in all of MTG and a fun way to improve your deckbuilding skills.

How about you? Do you like Limited because there's less pressure to buy a playset of 4, or fill out a collection tracker? Share your most memorable experience of playing a Sealed deck in the comments below. I’d love to hear them!

Ready to read more from us? Check out our blog for tons of MTG stuff that will definitely be a good read for any player.

And again, if you play MTG Arena and don't have Arena Tutor by your side to help you build decks, you're making a mistake!