Keyword Abilities

A registry-shaped meta classifier that emits a has_<keyword> boolean for each of the 213 keyword abilities in the Scryfall catalog, plus JSON-stringified parametric arrays (protection_from, hexproof_from, landwalk_types, cycling_types) and the umbrella has_landwalk / has_cycling flags. The aggregator name is a label; the real filterable tags are the dynamic per-keyword keys. Distinct from keyword_granter (hands keywords to other creatures) and keyword_payoff (rewards having keywords) — this one only detects presence.