To generate json file:

bundle install
bundle exec bin/build_jsons decks.json

Adding new sets

To add new decks from new set:

• use url2txt from taw/mtg repo to fetch decklists
• move decklists to right repository
• use bundle exec bin/build_jsons decks.json to validate file structure
• use bundle exec bin/validate_card_names to validate card names

CI will do validation for you if you open a PR.

Card set annotations

Every card that comes from a set different from the deck's own set must be annotated with [SETCODE] (or [SETCODE:number] when a specific printing is needed); a trailing [foil] may follow. Cards from the deck's own set need no annotation. For example, an Avatar Eternal (TLE) card inside an Avatar (TLA) deck is written 1 Thriving Heath [TLE]. The set-only form is enough when the card has a single printing in that set. The indexer can sometimes infer a cross-set printing on its own, but annotating it explicitly is required — it otherwise errors (No Standard legal printing found) or silently guesses.