The 5e-inherited card database carried 85 rows tagged expansion2; 6e has only the basic deck and Expansion Set #1, and buildDeck never dealt them. They kept leaking into things that cite the database (rulebook text, the IDIOT aid list), so the rows are gone and CardSet no longer names the set. Other editions can reintroduce their own sets when they arrive. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0138A8CjeQRpvzKxuMfz1Bqc