The most broadly evidenced card on Commander’s board-impact leaderboard is a 45-cent ramp spell

The sample: 282 Commander cards qualified for ranking, each appearing in at least 10 distinct decks with at least 25 recorded observations across 8,969 AI-piloted games. The score is not a damage count or a win-rate attribution — it is a single board-quality number, sampled two turns after the card is played, and it is worth reading before you read the leaderboard:

All fifteen qualifying leaders are shown below. Prices are TCGplayer market for the cheapest widely available printing on 4 August 2026; five of the fifteen cost under sixty cents, and four cost more than $29.

Now the color question, which the same dataset answers on a much larger pool: every qualifying card is bucketed by the colors in its identity and averaged. Red leads, and the ordering is the same one the win-rate data produces independently — Red-inclusive decks also posted the highest color win rate in this snapshot at 44.1%.

The score is a difference, and both snapshots are taken after the card resolves — the permanent is already on the battlefield in the baseline, and the card is already out of your hand. That cancels the two things you would expect to dominate. Spending the card costs nothing in the delta, because your hand is already down when the clock starts. And a large body earns nothing for being large: its power sits in both snapshots, so a 12/12 that lands and then does nothing for two turns scores close to zero. What survives the subtraction is only what the card caused afterwards — an attack that connects, worth double its damage through the life term; a trigger that puts another body down; the extra spell you cast because the card ramped you there. It cuts the other way too: if the permanent dies inside the window, its power leaves the second snapshot and the card absorbs the whole loss.

That makes the aggregate buckets a tempo reading rather than a cost accounting. Creatures average +2.20 across 67,959 observations because they attack and because they are still standing two turns later. Artifacts (−2.07) and enchantments (−2.19) trend the other way not because they cost you a card — that already cancelled — but because the turn you spend deploying one applies no pressure while everyone else’s board keeps growing; the delta is catching your opponents’ development, not your card failing. The colorless bucket at −1.49 is largely mana rocks and reads the same way. It also explains the cheap entry near the bottom of the leaders: Farseek’s land is already on the battlefield when the baseline is taken, so every point of its +10.68 is downstream — what a two-mana ramp spell let you deploy by turn four, credited to the card that bought the turn. Two confounders: the window credits a card with everything that happened across those two turns, including your opponents’ turns, so a single observation is noisy and only the pooled figure means much; and multicolor cards count toward every color in their identity, so a four-color card votes four times in the color table.

You can run this on your own deck without any software, because the formula is three numbers you can already see. Take your five most expensive spells. For each one, freeze the picture the moment it resolves — your life lead, your total power on board, your cards in hand, all against your opponents’ — then take the same three numbers two turns later and subtract. Weight the difference the way the score does: life times two, power times one, cards times three. Be clear about what that measures: not how big the thing you cast is, but whether the two turns after it landed went your way. The cards that fail this test are usually the ones that need a second piece before they do anything, and the ones that fail hardest are threats that die before your next turn comes around. Swap one of those for something that generates pressure or cards on its own, and keep the rest.

The cheap end of this list is where the value is. Farseek ($0.45), Ghalta, Primal Hunger ($0.51) and Dragonlord Atarka ($0.56) together cost $1.52 and all three sit in the top fifteen — Farseek with 47 decks behind it, more than twice the deck coverage of any other card on the list, and scoring entirely on what came after it rather than on anything it puts on the board itself, which is the strongest argument on this page for a forty-five-cent card. Widen the list and the pattern holds: the five cheapest cards on the leaderboard cost $2.32 for the set, while the four most expensive run $29.95 to $46.02 and sit scattered through the middle and bottom of the same ranking. Price and board quality are not moving together here. Buy the $2.32 test first; if the effect shows up in your games, then decide whether the expensive version is worth it to you.

This is a board-state proxy, not a win-rate contribution — a card can top this list and still lose you the game. Because the baseline is taken after resolution, a threat that trades with removal inside the window records a large negative purely for having been answered, so the ranking partly measures how well a deck protects what it casts rather than what a card is worth on its own, and negative figures fall out of that structure rather than constituting any judgment on card quality. The leaders also rest on thin evidence (10 to 18 decks and 43 to 253 observations each) next to the color buckets’ tens of thousands, and every price here is a 4 August 2026 snapshot.

The board doesn't know what a card costs.

Pricing snapshot: TCGplayer market prices for the cheapest widely available nonfoil printing of each card, retrieved 4 August 2026. Singles prices move weekly and vary by printing and condition — re-check before you buy. Simulation figures are from the 1 August 2026 snapshot (dataset v2.4, CC BY 4.0).