We Simulated 5,295 Games to Find the Best Commander Precons
Published 2026-09-14
Grim.Cards Precon Performance Study
We Simulated 5,295 Games to Find the Best Commander Precons
The internet has argued about the strongest Commander precons for years. So we stopped arguing. Grim.Cards sent 127 preconstructed decks through the Gauntlet, against our five Meta-covarage opponents —and one deck left a trail of bodies.
Results through September 14, 2026
Everyone has a precon ranking. Almost nobody has receipts.
Ask ten Commander players for the best precon ever made and odds are you will get twelve different answers. One remembers the deck that steamrolled release night. Another ranks by card value. A third quietly names whichever deck they upgraded until only the basic lands remained.
Those opinions can be useful. They are not a controlled comparison.
We asked a harder, cleaner question: when stock precon decklists face the same opponents under the same conditions, which ones actually win? Each deck entered a gauntlet built around five very different threats: Edgar Markov Vampires, Atraxa Superfriends, Derevi Bant Control, Breya Artifact Combo, and Aesi Landfall.
That isn't going to settle every kitchen-table argument, but it does give the argument something it rarely has: evidence.
Avengers Assemble did exactly what its name promised
Thirteen wins. Two losses. Three opponents swept without dropping a game. Avengers Assemble did not merely finish first—it opened a 6.7-point gap over second place.
Draconic Destruction was nearly as brutal at 12-3. Then came a sharp drop to the 73.3% tie between Urza's Iron Alliance and Draconic Domination.
The ranking below is based on measured all-time matchup win rate. The current Grim.Cards Power Score is shown separately; it is not substituted for the game results.
| Rank | Precon | Win rate | Power Score | W-L-D | Games | Opponents |
|---|---|---|---|---|---|---|
| 1 | Avengers Assemble | 86.7% | 89.7 | 13-2-0 | 15 | 5 |
| 2 | Draconic Destruction | 80% | 83 | 12-3-0 | 15 | 5 |
| 3 | Urza's Iron Alliance | 73.3% | 75.3 | 11-4-0 | 15 | 5 |
| 4 | Draconic Domination | 73.3% | 74.3 | 11-4-0 | 15 | 5 |
| 5 | Doom Prevails | 66.7% | 67.7 | 10-5-0 | 15 | 5 |
| 6 | Endless Punishment | 65% | 66.8 | 39-21-0 | 60 | 5 |
| 7 | First Flight | 64% | 65.2 | 48-25-2 | 75 | 5 |
| 8 | The Fantastic Four | 60% | 61 | 9-6-0 | 15 | 5 |
| 9 | Virtue and Valor | 60% | 61 | 9-4-2 | 15 | 5 |
| 10 | Lorehold Spirit | 60% | 62 | 9-4-2 | 15 | 5 |
The top ten is stranger than it looks
This is not simply a parade of the newest, flashiest decks. Urza's Iron Alliance and Draconic Domination tied at 73.3%, while the supposedly entry-level First Flight landed above crossover headliners including The Fantastic Four.
That is precisely why measured performance matters. Reputation follows commanders, franchises, reprint value, and release-day excitement. Games have the inconvenient habit of ignoring all four.
The gauntlet had two apparent pressure points
Look at the 15 strongest individual results and a pattern jumps off the autopsy table: seven sweeps came against Breya Artifact Combo and six came against Derevi Bant Control. Only two of the highlighted 3-0 results came against another archetype, both versus Atraxa Superfriends.
That does not prove Breya and Derevi are the easiest opponents across the entire dataset; this table deliberately shows only the strongest matchups. It does tell us that when a precon found a decisive edge, those were usually the decks on the other side of the table.
| Precon | Opponent | Win rate | W-L-D | Games |
|---|---|---|---|---|
| The Ruinous Powers | Derevi Bant Control | 100% | 3-0-0 | 3 |
| The Fantastic Four | Derevi Bant Control | 100% | 3-0-0 | 3 |
| Urza's Iron Alliance | Breya Artifact Combo | 100% | 3-0-0 | 3 |
| Urza's Iron Alliance | Derevi Bant Control | 100% | 3-0-0 | 3 |
| Veloci-Ramp-Tor | Breya Artifact Combo | 100% | 3-0-0 | 3 |
| Virtue and Valor | Derevi Bant Control | 100% | 3-0-0 | 3 |
| Avengers Assemble | Breya Artifact Combo | 100% | 3-0-0 | 3 |
| Avengers Assemble | Derevi Bant Control | 100% | 3-0-0 | 3 |
| Avengers Assemble | Atraxa Superfriends | 100% | 3-0-0 | 3 |
| Deep Clue Sea | Breya Artifact Combo | 100% | 3-0-0 | 3 |
| Desert Bloom | Breya Artifact Combo | 100% | 3-0-0 | 3 |
| Doom Prevails | Breya Artifact Combo | 100% | 3-0-0 | 3 |
| Draconic Destruction | Breya Artifact Combo | 100% | 3-0-0 | 3 |
| Draconic Destruction | Derevi Bant Control | 100% | 3-0-0 | 3 |
| Draconic Destruction | Atraxa Superfriends | 100% | 3-0-0 | 3 |
What 5,295 simulated games can—and cannot—tell you
These results are most useful for comparing how unmodified decklists perform under the same repeatable test. They can reveal strong starts, weak matchups, and decks whose results hold as more simulations are completed.
They do not measure card value, ease of play, upgrade potential, or fun. They also do not reproduce table politics or the threat assessment of a four-player human pod. Forge AI can make unusual decisions, particularly in complex board states, so read close results with caution.
Missing matchup rows remain missing. They are never converted into zero wins or zero games.
Frequently asked questions about the best Commander precons
What is the best Commander precon in this test?
Avengers Assemble currently ranks first with a 13-2 record, an 86.7% win rate, and a current Grim.Cards Power Score of 89.7. That result covers 15 games against five gauntlet archetypes.
What is the strongest Commander precon out of the box?
In this controlled simulation dataset, Avengers Assemble has the highest measured win rate. “Strongest ever” is a broader claim than one study can prove because results depend on opponents, pilots, multiplayer dynamics, and ordinary game-to-game variance.
Which older precons still performed well?
Urza's Iron Alliance and Draconic Domination tied for third at 73.3%, while starter deck First Flight finished seventh at 64%. The results show that a precon does not need to be new or expensive to remain dangerous.
Are these upgraded Commander decks?
No. This comparison evaluates the tested preconstructed decklists, not tuned upgrade builds. Clicking a deck name opens its complete Grim.Cards Gauntlet result.
Why do some matchups show a 100% win rate?
Each listed sweep is 3-0. That is exactly what happened in the recorded games, but three games are not enough to declare a matchup certain. More testing may move those percentages sharply.
How is Power Score different from win rate?
Win rate is the starting point. Grim.Cards then applies a dominance modifier for each three-game opponent matchup: sweeping an opponent 3-0 adds one point, while losing all three games 0-3 subtracts one. For example, Avengers Assemble’s 86.7% win rate becomes an 89.7 Power Score because it recorded three clean sweeps. Power Score therefore rewards decks that dominate complete matchups and penalizes decks that are completely shut down by one.
Methodology
- Simulation completion dates represented in the durable matchup records: September 10-14, 2026.
- Evidence source: all-time
gauntlet_matchup_statsand its idempotent claim ledger; current Power Score comes from the materialized deck embedding. - All 635 available opponent-level records were included. No separate lifetime-summary denominator was blended into the matchup data.
- Deck-ranking floor: 1 detailed game. Individual-matchup callout floor: 1 detailed game.
- Every row was validated so wins + losses + draws equals total games.
- Missing opponent rows remain missing; no zeroes are imputed.
- Simulation results are evidence, not a guarantee of human multiplayer performance.