MTG Decklist Builder

Purpose and Audience: This MTG decklist builder solves the problem of organizing a 60-card main deck with an optional 15-card sideboard for formats like Standard, Modern, and Commander. It targets competitive players, casual players, and tournament organizers who need reproducible, format-aware lists. It emphasizes precise card counts, format awareness, and reproducible outputs, without UI discourse.
Conceptually, the tool uses a deck blueprint: a requested total main deck, intended color identity, and an archetype. It maps to a main_deck list and a sideboard; if a pool is provided, it selects cards with the right mana costs and colors to achieve a balanced mana curve and synergy.
Value: For tournament prep, coaches, and content creators, it reduces manual counting errors and provides ready-to-share lists; it also provides substitution suggestions when a preferred card is unavailable. Unique differentiators include format-aware legality checks, mana-curve balancing, and export-ready JSON/csv outputs with clear main/sideboard separation, plus archetype recommendations and substitution alerts.