MTG Deck Builder

A deck-building tool for MTG players to craft and test card pools, analyze mana curves, and optimize formats before play.

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About This Tool

This MTG deck builder ingests a card pool and outputs viable deck candidates that meet format constraints and strategic goals. It analyzes mana curves, color identities, and card synergies to surface high-potential configurations. Beneficiaries include casual players learning deck theory, competitors preparing for events, and educators demonstrating interaction patterns. Core value lies in turning random pools into structured, testable decks with measurable metrics. It supports multiple formats and can generate sideboards, budget-aware options, and export-ready lists for further refinement. The tool focuses on domain logic and algorithmic ranking rather than UI specifics, making it suitable for integration into learning platforms, developer workflows, and automated testing pipelines. Unique differentiators include formalized metrics for curve and synergy, and multi-format comparison capabilities that help users understand trade-offs across Standard, Modern, and Commander. Use cases include building a 60-card Standard deck from a given pool, assembling a 100-card Commander deck plan, or testing alternate color identities against target archetypes. Core features include deck-size enforcement, format legality checks, mana-curve analysis, color balance assessment, and candidate deck ranking. Outputs provide deck lists, analytics, and land-count recommendations to support rapid iteration and decision making.

How to Use

  1. Provide inputs: supply card_pool, format, deck_size, and max_copies.
  2. Set constraints: color_identity, budget, and any format-specific limits.
  3. Run generation: initiate the deck-generation process to produce candidate decks and metrics.
  4. Review outputs: examine top decks, metrics, and suggested land counts; refine constraints as needed.
  5. Export results: copy deck lists, sideboards, and analytics or export to JSON/CSV for external tools.
How to use mtg deck builder

Frequently Asked Questions

Find Quick Answers

How many cards are in a deck for different formats?
Most constructed formats use 60 cards per deck, while Commander uses 100 cards. The tool respects these norms and can adjust generation when a non-standard target size is requested.
How is mana curve evaluated?
Mana curve is calculated from the converted mana costs of included cards to produce a histogram and average mana per card. The tool prioritizes a balanced curve to support early plays while maintaining late-game power.
Can I generate a sideboard?
Yes. If enabled, the tool can propose a sideboard based on common meta counters and gaps identified in the main-deck analysis, with exportable lists.
Does this enforce tournament legality?
The tool enforces format legality constraints (card counts, color identity, and basic restrictions). It does not adjudicate specific tournament bans or event-specific rulings beyond standard format rules.

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