colombod-personal/the-vault
Magic: The Gathering rules, cards, decks and collection tools for your AI assistant, grounded in Scryfall and the Comprehensive Rules, with sources shown. Free and unofficial; credits to Scryfall, Wizards of the Coast, Commander Spellbook, Archidekt and the other sources at https://mtgvault.cards/credits.html.
Take a public Archidekt deck, compare it with the cards a person owns in The Vault, suggest changes within a budget, and help them order what is missing. Use when someone shares an Archidekt deck link, asks what they still need to buy for it, wants it upgraded, or wants to find the missing cards in a shop.
Answer questions about a person's own Magic card collection in The Vault - value, gains and losses, what they own, what is shared with them, and how a deck fits it. Use for "what is my collection worth", "my most valuable cards", "do I own the cards for this deck", price changes, sets or colors in the collection, spare copies, small edits when they bought, sold or traded cards, bringing in a fresh export from their app, organising it into buckets and tags, sharing, and starting over or undoing a change.
Suggest card swaps to improve a Magic deck within a budget, checked by The Vault so the budget and legality are guaranteed. Use when someone shares a decklist and wants upgrades, cuts, a budget build, a tune-up, or help with a weak role (ramp, draw, removal, sweepers), or wants to save, change or delete a deck.
Run a small council of Magic: The Gathering experts on a deck review, a rulings question or a synergy question: on-topic experts give independent views, a devil's advocate challenges them, and you report the plan with the discussion available on request. Use when someone wants their deck reviewed or tuned, a second opinion, a rules dispute settled, or a deep look at what a deck is trying to do.
Explain how two or more Magic cards interact, step by step through the stack and timing, citing the rules that apply. Use when someone asks how cards combine, what happens when X meets Y, whether a combo works, or wants a worked example of triggers, replacement effects, layers or priority.
Answer Magic: The Gathering rules questions from the Comprehensive Rules, Oracle text and rulings, with verified citations. Use for any "does X work with Y", "how does Z resolve", timing, priority, stack, layers, replacement effect, trigger or keyword question about Magic cards or rules.
Work out which cards of a Magic decklist a person still needs and give them a list to buy, with dated prices. Use when someone asks what they are missing for a deck, how much a deck will cost them, or wants a list to paste into Card Kingdom, Cardmarket or another store.
Rules for showing Magic card data, rules text, prices, decks and combos that come from The Vault. Use whenever you show or quote anything a Vault tool returned (cards, Oracle text, rulings, rules, prices, tags, combos, decks), and whenever another Vault skill tells you to credit sources.