We asked an AI for the list that won the Louisville Regional. Ten seconds later: Dragapult ex, 60 of 60 legal in Standard and a price on every card. That TikTok video (@tcgjoin) brought a pile of comments and requests, so here is what Deck Coach really does, what it doesn't, and how to ask it.
What Deck Coach does
- Builds complete, legal lists: 60 cards in Pokémon and Magic, 50 in One Piece, 40 to 60 in Yu-Gi-Oh!, with the format checked. The Louisville one is [[deck:pokemon/regional-louisville-ky-2026-riley-mckay-dragapult|Riley McKay's list]], and as of 20 October 2026 it costs €34.49 on Cardmarket.
- Prices every card from our catalogue, not from memory: you know what the deck costs before buying anything.
- Reads your collection, scanned or imported from another app. "Deck from my collection" uses only what you own and tells you what is missing.
- Explains the game plan: what you want in the opening hand, how the game closes, which cards are the engine.
- Answers in your language, with cards in your language: in Spanish it shows Spanish cards; in Japanese, Japanese ones.
How to ask so it gets it right
- Say the game and the format: "Pokémon Standard", "Magic Commander", "One Piece".
- Name what you want to play: a card, a Leader, an archetype. "Doflamingo deck", "Dragapult ex list".
- If you want to use your own cards, say so: "from my collection". Otherwise it builds the best list from the catalogue.
- Ask for the why: "explain how it plays" or "what is the weak spot" is worth more than another list.
- Iterate: "drop the cards over €10", "swap the Leader for a red one". Every pass sharpens it.
What it does not do: guarantee you win. The meta changes every week and piloting the deck is still on you. If it builds something odd, the request was most likely ambiguous: say the game and the exact Leader or card. The reference lists are in championship decks, updated every Monday with the weekend's results.
Free, no card needed
The free plan includes ten trial queries to Deck Coach, no card required. A query the AI cannot answer does not use up a try. Paid plans give 20 or 80 queries a day and keep your conversation history; see the plans.
The Deck Coach videos are on TikTok (@tcgjoin). Leave your request in the comments: we build it in the next video, with your name on it.
If you would rather understand first why a generic chat makes up cards and this one does not, we cover it in how to ask an AI for a deck without it slipping in cards that don't exist.