Is this a ranking of the strongest Commander decks?

No, and that's deliberate. Ranking precons by how often they win would need real game data at a sample size TurnZero doesn't have yet. Our own tracked games are nowhere near enough per commander to trust a win rate. What this measures instead is build quality: whether a precon's actual decklist hits the ramp, removal, card advantage and curve targets that a deck of its kind is supposed to hit. A tight S-tier build can still lose to a looser D-tier one at the table; this tells you how well each was assembled, not how it performs.

What does the tier letter actually measure?

Each precon is measured against the deckbuilding template its own cards best suggest. A mill deck is measured against mill's targets and a stax deck against stax's, rather than every deck against one generic shape. The gap between what it runs and what that template calls for, summed across every slot, produces a score; the tier is a percentile band over that score across the whole catalog, S being the closest-built tenth and D the furthest. It moves as newer precons join the ranking, the same way a win rate is never presented as fixed.

How is the template picked for each precon?

The same rule-based archetype detector the TurnZero app offers players when they're tagging their own deck reads the decklist and picks the strongest signal: spellslinger, aristocrats, voltron, stax, control, and so on. A precon with no strong signal in either direction measures against a balanced-midrange template instead of nothing.

Why measure precons instead of every deck people build?

Precons are a fixed, complete catalog nobody had to submit. Every list is already known, so the whole thing can be measured and ranked at once with no games required. Custom decks players have actually built and published, with a real win rate once one has earned it, are on the published decks page instead, which is a different (and honest) kind of ranking.

How often does this update?

The ranking is cached for a few hours at a time rather than recomputed on every page load, since measuring 174 decklists in full is real work and the underlying catalog only changes when a new precon gets imported. A newly released precon joins on the next refresh after import, not instantly.

Commander Precon Tier List: Every Deck, Measured

S

Tales of Middle-earth Commander · 2023

Riders of Rohan

Éowyn, Shieldmaiden

Measured against Kindred

Bracket 4 floor 1 infinite combo

On target across every measured slot.

The Commander Precon Tier List

Riders of Rohan

Raining Cats and Dogs

Grave Danger

Ruthless Regiment

Calling All Angels

Buckle Up

Everyone's Invited!

Mind Flayarrrs

Wade into Battle

Wade into Battle

Eldrazi Unbound

Vampiric Bloodline

Built From Scratch

Built From Scratch

Wakanda Forever

Avengers Assemble

Limit Break (FINAL FANTASY VII)

Party Time

Vampiric Bloodlust

Token Triumph

Blood Rites

Grand Larceny

Eternal Bargain

Elven Empire

Sneak Attack

Peer Through Time

Tramplesaurus Rex

Counter Intelligence

Angels: They're Just Like Us but Cooler and with Wings

The Ruinous Powers

Sliver Swarm

Fae Dominion

Seize Control

Wretched Ranks

Draconic Rage

Invent Superiority

Blast from the Past

Temur Roar

Miracle Worker

Adaptive Enchantment

Necron Dynasties

Corrupting Influence

Reap the Tides

Ahoy Mateys

Mishra's Burnished Banner

Witherbloom Witchcraft

Lorehold Legacies

Legends' Legacy

Deadly Disguise

Primal Genesis

Science!

Quantum Quandrix

Nature of the Beast

Creative Energy

Blame Game

Call the Spirits

Cavalry Charge

Swell the Host

Silverquill Statement

Doom Prevails

Silverquill Influence

Mardu Surge

Land's Wrath

Forged In Stone

Draconic Domination

Planeswalker Party

Spirit Squadron

Masters of Evil

Plunder the Graves

Plunder the Graves

Growing Threat

Desert Bloom

Veloci-Ramp-Tor

Undead Unleashed

Revival Trance (FINAL FANTASY VI)

Cabaretti Cacophony

Feline Ferocity

20 Ways to Win

Draconic Dissent