Foundations Commander decks are built to play well straight out of the box, but almost any precon benefits from a handful of upgrades once a player has a few games under their belt and a sense of what the deck actually wants to do.
The good news is that upgrading one of these five decks doesn't mean rebuilding it from scratch. A small number of well-chosen swaps usually goes a long way.
This guide covers where to focus first, based on what tends to matter most for a monocolor, single-strategy precon like these.
The goal is targeted improvement, not a full teardown of a deck that's already doing its job reasonably well.
Because each Foundations Commander deck is monocolor, mana fixing is simpler than in a multicolor deck, but ramp is still one of the highest-value upgrade categories across all five. Faster access to a deck's game plan compounds across every subsequent turn.
Even a couple of additional mana rocks or ramp spells can meaningfully speed up how quickly Reign of Dragons or Tramplesaurus Rex reach their big threats.
Precon removal tends to be serviceable but not optimized. Swapping in more efficient, cheaper removal spells, especially ones that hit a wider range of threats, is a reliable way to make any of these five decks noticeably more consistent.
This matters most for Calling All Angels, whose go-wide plan is more exposed to a single sweeper wiping the board than the other four strategies.
Rather than diluting a deck's identity with generic good cards, doubling down on its actual theme tends to produce the best results. Adding more artifact synergy pieces to Keen Engineering, or more recursion effects to Wretched Ranks, reinforces what each deck is already trying to do.
This approach also keeps upgrades relatively affordable, since staying within an established archetype means fewer expensive, hard-to-find staples are strictly necessary.
Some of the five decks lean more on card advantage than others out of the box. Wretched Ranks and Keen Engineering already have solid card draw built in; Reign of Dragons and Tramplesaurus Rex benefit more from a few added draw spells to avoid running out of gas after an early explosive turn.
Running out of resources after a fast start is a common failure point for aggressive precons, and it's an easy one to fix with a small number of targeted additions.
Since the commander leads the deck's strategy in every one of these five builds, adding one or two pieces of protection, whether that's a way to make it harder to remove or a way to recover if it does die, tends to pay off across many games rather than just one.
This is a small, inexpensive category of upgrade that has an outsized effect on how consistently a deck's core plan comes together.
A reasonable approach is picking five to ten swaps per round of upgrades rather than trying to overhaul the whole 99-card list at once. That keeps the deck's original identity intact while still meaningfully improving it, and keeps costs manageable along the way.
Spacing upgrades out across a few sessions also gives a better sense of what the deck actually needs, rather than guessing at changes before playing it enough to know.
Because each Foundations Commander deck stays within a single color, most useful upgrades come from a relatively narrow, well-understood card pool rather than requiring rare, expensive multicolor staples. That keeps upgrade costs more predictable than shoring up a typical multicolor Commander deck.
Checking recent Standard-legal and Commander-focused sets for reprints of classic staples is often the cheapest way to find strong additions, since reprints tend to keep prices well below a card's original printing.
Not every deck needs the full upgrade treatment right away. If a deck is already winning its fair share of games and still feels fun to pilot, holding off on changes for a while is a perfectly reasonable choice.
Upgrading purely for the sake of upgrading can sometimes strip out the exact simplicity that made a deck enjoyable to new players in the first place.
No, a handful of targeted swaps is usually enough to meaningfully improve any of the five decks.
Ramp and mana fixing tend to have the biggest overall impact.
Yes, reinforcing the existing strategy tends to work better than diluting it with generic cards.
Five to ten is a reasonable pace that keeps the deck's identity intact.
New additions deserve the same protection as the original 100-card list. Sleeve every upgrade with EVORETRO Perfect Fit Sleeves as it goes into the deck.
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