Ask a Judge
The Ask a Judge page (/judge-questions) leads with a prominent link to the live community judge chat at chat.magicjudges.org/mtgrules — a 24/7 IRC channel (#magicjudges-rules on Libera.Chat) staffed by certified judges and rules experts. This is the authoritative path.
When the page is opened with a ?card=<name> query parameter (e.g. from Card Lookup), it pre-formats a !CardName — opening message ready to copy into the chat.
A clearly labeled secondary ChatGPT prompt generator is provided below for casual play and quick second opinions. It carries a prominent disclaimer ("ChatGPT can be confidently wrong about MTG rules") and, if a reference card is supplied, fetches that card's Oracle text and rulings and embeds them in the generated prompt. The prompt itself starts with the same warning so ChatGPT cannot bury it.