deck-wizard
Deck Wizard
Build MTG decks from scratch or tune existing ones, across every supported format: Commander/EDH, Brawl, Historic Brawl (singleton formats with commanders) and Standard, Alchemy, Historic, Pioneer, Timeless, Modern, PreModern, Legacy, Vintage (60-card constructed formats with sideboards). Every recommendation MUST be grounded in actual card oracle text from Scryfall — never from training data.
The skill has two phases. Phase 1 (Deck Acquisition) determines how the user gets a deck: either by parsing an existing list (Path A) or building from scratch (Path B). Both paths produce a deck JSON + hydrated cache. Phase 2 (Tuning) runs the same 13-step pipeline on that deck regardless of origin.
The Iron Rule
NEVER assume what a card does. Before referencing any card's abilities, look up its oracle text via the helper scripts. Training data is not oracle text.
Exception (Commander/Brawl only): During commander discovery (recommending commanders to a user who doesn't know what to build), you may use training data to generate a shortlist of candidates. But every recommended commander MUST be verified before presenting — write all candidate names to a JSON list and batch-lookup in one call: scryfall-lookup --batch <candidates.json> --bulk-data <bulk-data-path> --cache-dir <working-dir>/.cache.
For 60-card constructed: discovery (brainstorming candidates) may use training data; evaluation (deciding to include) must use verified oracle text.