How to upgrade a precon Commander deck

Commander precons are a great on-ramp: you open the box, sit down, and play. But most precons are balanced to be fun out of the box, not tuned — and a few targeted upgrades can make the deck feel like yours. Here's how to do it without spending money on cards you already own or losing track of what you changed.

What actually makes a precon worth upgrading?

Precons usually have a coherent theme but get diluted for one of two reasons: Wizards includes reprints to hit a price point, or they spread synergies thin so the deck doesn't steamroll inexperienced players. Either way, there's often a tighter, faster version of the deck hiding inside the existing 100 cards. You don't need to rebuild from scratch — you need to cut the cards that don't pull their weight and add ones that do.

The goal of a first upgrade pass isn't to make the deck competitive; it's to make the theme run more consistently. Consistency upgrades (ramp, card draw, targeted removal) give you the most return for the fewest dollars.

How do you figure out which cards to cut?

Read through every card in the deck and ask: does this card directly advance the commander's game plan, or is it generic filler? Filler cards fall into recognizable patterns:

• High-mana-value cards with weak payoffs. Anything that costs 6+ mana and doesn't immediately impact the board or win the game is usually a cut.
• Off-theme ramp or card draw. Generic sorceries like Divination or Explosive Vegetation are fine, but if there's a synergistic alternative for your deck's colors and strategy, swap it in.
• Situational cards included for flavor. Cards that only work in very specific scenarios waste deck slots.
• Duplicate effects at worse rates. If the precon includes both a mediocre and a strong version of the same effect, cut the mediocre one.

Aim to identify 10–15 cut candidates before you look at any additions. Cutting before buying prevents the trap of buying great upgrades and then not knowing what to remove.

Where do upgrade suggestions come from?

EDHREC is the standard tool. Enter your commander's name and you'll see cards ranked by how often they appear in similar decks on the internet. The "Signature Cards" section highlights cards that over-index for that specific commander — these are usually your best upgrade targets.

A few filters to apply before you buy:

• Filter by budget if you set one. EDHREC shows approximate prices.
• Cross-reference with your cut list: you're looking for cards that replace a weak slot with something on-theme, not just powerful generic cards.
• Check combo lines. Commander Spellbook lists two- and three-card combos for most commanders — knowing which combos your deck supports helps you prioritize pieces you're missing.

If you use Archivist's deck builder, the EDHREC upgrade suggestions are surfaced directly inside the app with your mana curve, bracket score, and combo detection — so you're not switching between tabs.

How do you avoid buying cards you already own?

This is where a digitized collection pays for itself. Before you open a singles order, check what's already in your binders, other decks, and bulk boxes. Staples like Sol Ring, Swiftfoot Boots, Arcane Signet, and most basic ramp spells are the kind of cards that appear in multiple precons — you may already own four copies without realizing it.

If your collection is cataloged in an app, you can search for each upgrade target by name and see immediately whether you own a copy and where it is. Without a catalog, you end up either buying duplicates or spending twenty minutes digging through boxes before every upgrade session. See how to track cards across multiple Commander decks for the full approach to managing staples across your decks.

How do you track what you still need to buy?

Once you've checked your collection and confirmed which upgrades you don't already own, those cards go on your wishlist. A wishlist serves two purposes: it's a shopping list when you're at a local game store, and it captures price targets so you can set alerts and buy when a card dips.

Many collectors use Archivist's wishlist to heart upgrade targets for each deck, then check out on TCGplayer when they're ready to buy a batch. Setting a price alert on an expensive upgrade means you don't have to choose between paying full price now or forgetting about it entirely — the app notifies you when it hits your target.

How much should a precon upgrade cost?

A practical first upgrade pass — replacing the 10 weakest slots with synergistic singles — typically runs $20–$50 depending on the deck's theme and colors. Blue and green Commander staples trend more expensive than other colors. You can hit a meaningful upgrade for under $30 if you lean on cards from your existing collection and focus on commons and uncommons that punch above their price.

A rough budget allocation: spend the majority on one or two high-impact pieces (your commander's best enablers), then fill the remaining slots with cheap, efficient staples. Resist the impulse to buy a $30 card until the $2 cards are in — the cheap upgrades often improve consistency more than the expensive ones.

What about the cards you cut?

Don't throw them in a bulk box without logging them. Cards you remove from a precon often end up in other decks or trade binders — but only if you can find them. Scan them into your collection with their correct location (a "Precon cuts" box works well) so you can actually find and reuse them. See building a Commander deck from scratch for how to think about your card pool before you start any new build.