What problem does it solve? Yu-Gi-Oh! deck building, card research, combo design, and YGOPro Lua scripting require deep, scattered domain knowledge; this Skill structures that expertise into a navigable tree of workflows with strict adherence and self-evolution rules. ## Core Features & Use Cases - Deck Building Workflow: A 5-step process from research through quantitative verification using ydkcheck.py validation and ban list compliance checks. - Card & Script Research: Database queries against cards.cdb, catalog validation, and Lua script analysis using the YGOPro API reference. - Script Implementation: Guided creation of YGOPro Lua card effect scripts with mandatory comparison against reference implementations. - Use Case: Ask the AI to build a competitive Exosister deck; it follows the deck-build workflow, validates the YDK file against the ban list, and compares the result against tournament reference lists. ## Quick Start Read the root SKILL.md and ask the AI to build a Yu-Gi-Oh! deck for a chosen archetype following the deck-build workflow.