TL;DR
- Start with 360 cards if you want the cleanest “everyone drafts everything” experience.
- Build for play patterns (curve, removal, fixing), not just “cool cards.”
- Keep archetypes wide and overlapping so drafters aren’t forced into one rail.
- Learn one two-player format (Winston or Grid) so cube nights happen even when the pod is small.
- Maintain your cube with a tiny change log and a bias toward small, reversible swaps.
What a “Cube” Is (and How Cube Draft Works)
A cube is a curated pool of Magic cards you draft like a booster set… except you made the set. You shuffle the cube, make packs, draft, build 40-card decks, add basic lands, and play.
Most cubes are singleton (one copy of each card) unless the designer says otherwise. Singleton keeps drafts interesting because you can’t rely on seeing the same card every time. It also makes every pick feel like it matters.
The basic “normal cube draft” loop looks like this:
- Each player drafts three 15-card packs
- You pick one card at a time and pass the pack
- Build a 40-card deck (minimum), then play
That’s it. The magic (sorry) is that you can draft your cube again next week and it still feels fresh—especially once you start tuning it.
Step 1: Decide What You Want Your Cube to Feel Like
Before you pick cards, pick a vibe. This is the part people skip, and it’s why first cubes sometimes turn into “random powerful cards fighting in a parking lot.”
Here are the big knobs that shape the experience:
Power level: powered, unpowered, or “medium spicy”
- Powered usually means the very top end of Magic’s power (fast mana, iconic broken artifacts, and the type of cards that create wild starts).
- Unpowered can still be strong, it just avoids the most extreme accelerants and “oops I win” openers.
- Medium cubes are often the easiest to balance for new groups because the gap between best and worst cards is smaller.
My rule: whatever power level you pick, try to keep it consistent across colors and archetypes. A single overpowered card can drag an entire draft toward itself.
Theme: goodstuff vs synergy vs “this set but forever”
Common beginner-friendly themes:
- Classic goodstuff (tight curve, strong interaction, solid threats)
- Set cube (one set or block recreated for repeat drafts)
- Pauper / Peasant (rarity-limited environments that often play cleaner than “all rares all the time”)
- Commander cube (multiplayer drafting with legends and identity constraints)
You can get more niche later. First cube? Keep it readable.
Restrictions (optional)
Cube has no official rulebook you’re forced to follow. Restrictions are self-imposed, and that’s the point. If a rule makes the cube better for your group, use it. If it makes the cube worse, cut it.
Step 2: Pick a Cube Size That Matches Your Group
Wizards’ own cube primer famously recommends starting at 360 cards because it supports a full eight-player draft where every card gets opened. That “everything appears” consistency is great for learning what your environment actually does.
Here’s the practical sizing cheat sheet:
| Cube size | Typical player count | What it changes |
|---|---|---|
| 180 (“twobert”) | 2–4 | Fast setup, super consistent, great for small groups |
| 360 | 6–8 | Cleanest baseline; at 8 players, everything is drafted |
| 450 | 8–10 | More variance; some cards stay in the box each draft |
| 540 | 8–12 | “Replayability” size; big variety, harder to support narrow combos |
| 720 | 16 (two pods) | Huge; needs broader archetypes and careful smoothing |
If you’re new: 360 is the “no regrets” choice.
Step 3: Build a Simple Cube Skeleton (So You Don’t Wander Forever)
A cube skeleton is just a rough breakdown of how many cards go in each section. It keeps you from doing the classic mistake: “Oops, I added 70 multicolor cards because they’re fun.”
Here’s a very normal starter 360 skeleton you can copy without thinking too hard:
- 50 cards per color (250 total)
- 50 lands (fixing lives here)
- 30 artifacts / colorless
- 30 multicolor (gold/hybrid)
That’s not a sacred formula. It’s a starting point that tends to draft well and keeps mana from becoming a disaster.
Two quick notes:
- Gold cards are the first thing that gets stranded in sideboards. Keep them tight early.
- If your cube feels clunky, the fix is often lands and cheap interaction, not “more six-drops.”
Step 4: Archetypes and Mana Curve (Draft Decks, Not Piles)
You can build a cube full of “great cards” and still end up with drafts where nobody has a coherent deck. Cube needs structure, even if it’s loose.
Use “anchor + support” thinking
For each archetype, you want:
- a few anchor cards that clearly point to the deck
- a pile of support cards that make the deck function
Example: if you want a sacrifice deck, the anchors are payoff engines. The support is fodder, outlets, and interaction. If you only include payoffs, the deck never works. If you only include fodder, the deck is sad.
Make archetypes overlap
The best cubes don’t feel like ten prebuilt decks shuffled together. They feel like a flexible environment where cards cross-pollinate.
A simple way to do this:
- put your payoffs in gold (optional)
- put your enablers in mono-color
- make sure enablers are useful in more than one deck
Respect the curve
If your cube has a bloated top end, games slow down, and “who drew their bomb” starts to dominate. If you want games with real decisions, load the 1–3 mana slots with playables.
A quick sanity check after your first draft:
- did aggro decks exist?
- did control decks have enough early interaction to not die?
- did midrange decks have plays on turns 2 and 3?
If the answer is “no,” don’t panic. It just means you need more early plays and removal density.
Step 5: Mana Fixing and Lands (The Part That Makes Cube Feel “Pro”)
Bad mana creates non-games. And non-games are the fastest way to make people stop showing up.
Your fixing package should match your cube’s speed:
- Fast, aggressive cubes need more untapped fixing
- Slower cubes can tolerate more lands that enter tapped
- Higher-power environments often add mana rocks to accelerate (and to let control/combo actually function)
If you’re building a classic two-color draft experience, aim for fixing that makes two-color decks reliable and three-color decks possible when someone spends picks on it.
Also: don’t be shy about giving lands real space. Lands aren’t “boring.” Lands are what let people cast their spells and have fun.
Step 6: How To Play Your Cube (Draft Formats That Actually Get Used)
The default: 3 packs of 15
This is the standard. Shuffle the cube, deal out packs, draft like normal, build 40s, add basics, play.
If your group already drafts retail sets, they’ll get it instantly.
Two-player cube: Winston Draft
Winston draft is the classic “we only have two people but still want to cube” format. It’s pile-based, tense, and surprisingly strategic. It also makes your cube way more usable because you don’t need a full pod to fire.
Two-player cube: Grid Draft
Grid draft is the other two-player workhorse. Lay out a 3×3 grid, players take a row or column, discard the rest, repeat. It’s fast, it rewards reading what your opponent wants, and it makes “small cube night” feel intentional.
My honest advice: learn one two-player draft method and keep it in your pocket. Most cubes die because they require eight people every time.
Step 7: Maintaining Your Cube (So It Gets Better Instead of Messier)
Cube maintenance is where you go from “I own a cube” to “this cube is good.”
Keep a tiny change log
Nothing fancy. Just:
- what you added
- what you removed
- why
It helps you avoid the “wait… didn’t we cut that card already?” loop, and it gives you a way to roll back changes that didn’t work.
Watch for power outliers
Every cube has strong cards. The problem is when a card (or small package) warps drafts so hard that everything becomes “draft the outlier or lose.”
When you notice that happening, you have options:
- cut it
- add more answers
- lower the environment’s speed so it’s less oppressive
- or accept it as part of the cube’s identity
There isn’t one correct answer. But you should choose on purpose.
Don’t overreact to one draft
One draft can lie to you. Variance is real. A card might look broken because it showed up in the perfect shell once. Give changes a little time unless the table is unanimously miserable.
Maintenance checklist (simple and boring on purpose)
- Replace scuffed sleeves (marked cards ruin drafts)
- Keep basics sorted and ready
- Store the cube in a way that makes setup fast
- Revisit fixing if people complain about mana two drafts in a row
Tools That Make Cube Easier
You don’t need online tools to cube, but they help:
- Cube list hosting (for sharing, stats, curve charts, color counts)
- Playtest drafts (to see if archetypes show up)
- Notes / tags (to track what each card is “doing” in the environment)
Even if you’re analog-first, having your list in one place makes maintenance way less annoying.
Conclusion
Building a cube is basically designing a Limited set that never rotates. The first version won’t be perfect. Good. Draft it anyway.
Start with a clear goal, pick a sane size (360 is the easiest on-ramp), prioritize curve and mana fixing, and choose at least one small-pod draft format so cube night doesn’t depend on eight calendars aligning.
Then do the fun part: draft, tweak, repeat. Cubes get good the same way decks get good—one smart change at a time.
FAQ
Is cube always singleton?
Most cubes are, but it’s not mandatory. If you want multiples (like to simulate retail Limited), go for it—just tell your drafters.
How many players do I need?
You can cube with 2–8 comfortably, and even more with the right size. Two-player formats (Winston/Grid) keep cube alive between big nights.
What size should my first cube be?
If you can only pick one: 360. It’s consistent, easier to balance, and widely recommended for learning.
How often should I update my cube?
Update when you have a reason. Some groups do seasonal updates, some tweak after every draft. The key is keeping changes small enough that you can tell what mattered.
Do I need sleeves?
If cards vary in wear or print style, sleeves prevent marked cards and make shuffling sane. Most cube owners sleeve for a reason.
Can I use printed proxies for expensive cards?
Yes, plenty of cube designers do. The main goal is consistency (same sleeve feel, same readability), not bragging rights.