Commander Deck Generator gallery

Atraxa, Praetors' Voice

Requested: $400 mainboard budget, bracket 3, intent: +1/+1 counters and proliferate.

Mainboard price
$272.97
Estimated bracket
3
Model calls
2
Tokens (in / out)
7,264 / 4,753
Estimated model cost
$0.0013
Wall time
118 s

What the generator itself flagged

These warnings are stored with the deck. They are shown unedited, including failures.

Commander profile

Written by the model in one profile_synthesis call from the commander's card text and the evidence below. Identity, set and timestamps come from trusted inputs, not the model.

+1/+1 counters and proliferate

Atraxa's end-step proliferate is the engine. The deck must accumulate counters on permanents and players, then use proliferate to multiply them. The user's intent focuses on +1/+1 counters, which is a mainstream path supported by cards like Evolution Sage and Ezuri, Stalker of Spheres. The deck wins by growing creatures to lethal size or using counter-based alternate win conditions like infect.

Win conditions the profile proposes

"in deck" marks profile key cards that made the final list. Others were cut by budget, legality, or optimization.

Build paths the profile describes
  • +1/+1 Counters Aggro (mainstream): Focus on creatures that enter with or gain +1/+1 counters, then proliferate to grow them. Use cards like Evolution Sage and Ezuri to double counter placement.
  • Superfriends (Planeswalker) (emerging): Use proliferate to add loyalty counters to planeswalkers, enabling ultimates quickly. Include planeswalker protection and proliferate spells.
  • Infect / Poison (emerging): Use proliferate to increase poison counters on opponents, winning with infect creatures or spells that give poison.
Rest of the strategic profile
Synergy priorities
high: ['Proliferate enablers', '+1/+1 counter synergies', 'Counter doublers']; medium: ['Planeswalkers', 'Infect/poison cards', 'Ramp and fixing']; low: ['Generic goodstuff', 'Non-counter combat tricks']
Anti synergies
description: Cards that remove counters from your permanents or prevent counter placement., cards_to_avoid: ['Hex Parasite', 'Vampire Hexmage'], reasoning: These cards remove counters, directly opposing the proliferate engine.; description: Cards that replace counters with other effects without synergy., cards_to_avoid: ['Solemnity'], reasoning: Solemnity prevents counters from being placed, shutting down the entire strategy.
Strategic constraints
mana_base_requirements: Four-color mana base requires heavy fixing; include fetch lands, shock lands, and ramp like Farseek and Chromatic Lantern.; interaction_density: medium; speed_tier: midrange
Power indicators
estimated_ceiling_bracket: 4; estimated_floor_bracket: 2; notes: Atraxa is a high-ceiling commander due to proliferate's flexibility, but the floor is lower if the deck lacks focus. Bracket 4 with optimized counter synergies; bracket 2 for casual builds.
Value inversions
normal_heuristic: Small creatures with +1/+1 counters are weak late-game., inverted_value: Proliferate makes every counter permanent grow exponentially, so even small creatures become threats., desired_characteristics: ['Creatures that enter with counters', 'Creatures with evolve or modular', 'Cards that place counters on multiple permanents'], undesired_characteristics: ['Creatures without counter synergy', "High-cost creatures that don't benefit from counters"], evaluation_guidance: Prioritize cards that generate counters or benefit from counters over raw stats.; normal_heuristic: Planeswalkers are slow and vulnerable., inverted_value: Proliferate adds loyalty counters, accelerating ultimates and making planeswalkers more resilient., desired_characteristics: ['Planeswalkers with high-impact ultimates', 'Planeswalkers with + abilities that generate value'], undesired_characteristics: ['Planeswalkers with low starting loyalty', "Planeswalkers that don't benefit from extra loyalty"], evaluation_guidance: Include planeswalkers that can win the game if they ultimate, as proliferate makes that achievable.
Engine dependencies
engine: Proliferate at end step, engine_card_traits: ['Cards that place counters on permanents or players', 'Cards that trigger on proliferate', 'Cards that double counters'], dependent_outputs: ['Increased +1/+1 counters', 'Increased loyalty counters', 'Increased poison counters'], false_synergy_warning: Cards that just benefit from having counters but don't add new counters or proliferate are traps; they don't feed the engine.
Mispriced card examples
card_name: Evolution Sage, why_undervalued: A 2/3 for 3 mana is mediocre, but it proliferates on landfall, doubling your proliferate triggers.; card_name: Thrummingbird, why_undervalued: A 1/1 flyer for 2 mana is weak, but it proliferates on combat damage, providing extra engine triggers.; card_name: Inexorable Tide, why_undervalued: A 5-mana enchantment that does nothing immediately, but it proliferates on every spell, generating massive value.; card_name: Tekuthal, Inquiry Dominus, why_undervalued: A 5-mana 3/5 is overcosted, but it doubles your proliferate triggers and can copy them.; card_name: Flux Channeler, why_undervalued: A 2/2 for 3 mana is unimpressive, but it proliferates whenever you cast a noncreature spell, rewarding spell-slinging.; card_name: Prologue to Phyresis, why_undervalued: A sorcery that gives one poison counter is weak, but with proliferate it becomes a win condition.; card_name: Astral Cornucopia, why_undervalued: A mana rock that enters with charge counters is inefficient, but proliferate turns it into a growing mana source.

Evidence cited

SourceWhat the build had
Card textOracle text for Atraxa, Praetors' Voice: Flying, vigilance, deathtouch, lifelink At the beginning of your end step, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Commander cohort (EDHREC)available: 45,202 public decks, general cohort, retrieved 2026-10-02 from EDHREC. observed inclusion rates only; no win rate or causal effect is implied; edhrec general cohort, 45202 decks, 288 cards
Most-included cards given to the profileForest 92% in deck, Command Tower 92% in deck, Island 91% in deck, Plains 90% in deck, Swamp 89% in deck, Sol Ring 85% in deck, Arcane Signet 79% in deck, Tekuthal, Inquiry Dominus 67% in deck, Exotic Orchard 64%, Karn's Bastion 60%, Evolution Sage 59% in deck, Swords to Plowshares 56% in deck, Ezuri, Stalker of Spheres 53% in deck, Vraska, Betrayal's Sting 53% in deck, Thrummingbird 51% in deck …
Community discussion (Reddit)0 threads. The search request was refused (HTTP 403) during these builds, so the profile had no community evidence.
Rules and reference chunks0 referenced. The reference corpus in the build database is empty, so no rules text was retrieved.
Tournament results0 decks; no tournament signal for this build.
Scoring signalsUsed: commander_cohort, embeddings, narrative, rules. Unavailable: edhrec, tournament_cwe. The legacy edhrec signal (a per-card table filled by a separate ingestion job) is reported unavailable even though the cohort data above was used; the project's evaluation report lists merging these two labels as follow-up work.

Pipeline stages

Deterministic code does the assembly. Counts and timings below are what this run recorded.

  1. Hard filters

    Color identity, Commander legality, singleton and per-card price ceiling leave 24,382 candidate cards. (1.1 s)

  2. Role scoring and Pareto pruning

    Each candidate is scored on synergy, mana efficiency and replacement value. Candidates dominated on every objective are dropped, leaving 1,494. 10 protected strategy and infrastructure cards are reserved before pruning so they cannot be lost. (6.2 s)

  3. Strategy plan

    Archetype counters, status satisfied. Requirements: Counter permanent ≥ 10. Final counts: Counter permanent 20.

    Requirements verify supported engine ingredients, not a complete win or competitive strength.

  4. Role targets

    Targets come from the commander template, which bounds what the optimizer aims for.

    RoleTargetFinalStatus
    Ramp1114met
    Card draw813met
    Removal69met
    Board wipes22met
    Win conditions33met
    Tutors21short
    Protection34met
    Recursion21short

  5. Infrastructure and synergy fill

    Infrastructure placed first: Sol Ring, Arcane Signet, Cultivate, Kodama's Reach, Nature's Lore, Beast Within, Counterspell, Generous Gift, Stroke of Midnight, Swords to Plowshares, Reality Shift, Austere Command, Day of Judgment, Swiftfoot Boots, Lightning Greaves. A greedy fill then adds the card with the best marginal objective until 99 slots are filled (synergy matrix over 1,494 candidates).

  6. Swap refinement

    The optimizer proposed 18 one-for-one swaps, each improving its current objective. Under the production preserve policy, a change set must pass a function-preservation check. This one was rejected (supported_function_loss, unknown_removed_functionality, missing_one_to_one_substitution_proof, deck_support_loss_or_unmodeled_dependency), so the previous list was kept.

  7. Budget repair and rebalance

    The optimizer proposed 0 upgrade(s), 0 unbundle(s) and 0 downgrade(s), for a mainboard total of $272.97. The change set was accepted under the preserve policy.

    Mainboard total after this stage: $272.97 (68.2% of budget).

How the list changed between stages

SnapshotCardsMainboard priceChange from previous
Synergy fill (greedy assembly)99$272.97Starting list
After swap refinement and strategy-variant choice99$272.97No change
After budget rebalance and repair99$272.97No change
After the safety review's replacements99$272.97No change
Final list99$272.97No change

Optimizer 23.4 s, review 39.4 s, profile 44.3 s.

Safety review

One batched card_fit_batch call reviews the riskiest selections and a menu of alternatives. Bounded risk review, not exhaustive card review.

Reviewed 18 of 47 eligible selections, plus 8 alternatives, in 1 call. A replacement must pass its own verdict and the final legality, budget and role checks. If no replacement passes, the card stays in the deck and is flagged, as below.

No selections were left flagged.

6 deterministic capability findings on cards in this deck

Final legality check

Recomputed for this page from the stored card records, separately from the builder's own acceptance check.

CheckResultDetail
Commander is legal as a commanderpassAtraxa, Praetors' Voice
99 cards plus the commanderpass99 + 1
Singleton (basic lands and 'any number' cards exempt)passno duplicates
Every card within the commander's color identitypassidentity BGUW
Every card Commander-legal in the stored catalogpassall legal
Mainboard within budget (commander priced separately)pass$272.97 of $400; commander $0.00

The builder's own acceptance check recorded 0 hard failure(s) and 6 warning(s), listed at the top of this page. Prices are from the corpus snapshot, not today's market.

Tokens and cost

Every model call goes through one client that records token usage, linked here to this deck. Costs are estimates at the configured rates ($0.06/M input, $0.015/M cached input, $0.18/M output for deepseek-ai/DeepSeek-V4-Flash-0731:deepinfra), not invoices. The deck summary is rendered from card facts and makes no model call.

Model callInput tokensCached inputOutput tokensEstimated cost
profile_synthesis3,19602,852$0.000705
card_fit_batch4,0685121,901$0.000563
Total (2 calls)7,2645124,753$0.001268

Decklist

Grouped by the slot role the optimizer assigned. ⚑ marks a card the safety review left flagged.

Ramp 13

Card draw 11

Removal 10

Protection 3

Win conditions 2

Synergy and utility 24

Lands 36

Download the JSON record for this build, which includes the full profile, the stage snapshots, review and audit data, and model-call usage.