HEART OFthe Cards Sign in
Delta Reign · Build & Battle

Open your box.
Get your best 40.

Your best deck from your pulls, and how to beat all four boxes.

Ultra Ball & Premier Ball League

Bring the deck
that beats the room.

Real tournament data, a plan for every matchup, and 200 test games in 30 seconds.

Which deck fits you?

Three questions. No sign-in.

Everything for your next event

Prerelease prepYour best 40 and the line that beats each box. Best deck for your fieldEvery popular deck ranked against who you'll face. Test your list200 games in 30 seconds: dead cards and the swap that wins. Skill issue or bad luck?Every turn of your game rated, with the better play. Rotation checkWhat your decks lose when H-mark cards leave. Every card, every setIncluding sets not out in English yet.

Free to start. Pro when your event gets close.

Free
US$0
  • Prerelease prep, unlimited
  • Deck ranking and every matchup
  • Card lists and rotation check
  • A few reviews, puzzles and test runs
Start free
Founding price
Pro
US$10 / month
  • Everything in Free
Start free, upgrade anytime
Cancel any time.

Questions

Where do the plans and reviews come from?

Real tournament results, the full card text, rules we've checked by hand and hundreds of simulated games, written up with AI assistance. Every card is checked against the current Standard format.

Is the Delta Reign info accurate before the English release?

Card text is translated from the Japanese release and checked against English previews; the tricky rules for each box are hand-checked. Wording may differ slightly from your printed cards.

Can I play Pokémon on it?

No. Play on TCG Live or with paper cards. Heart of the Cards is where you prepare.

Is this official?

No. It's an independent fan-made tool, not affiliated with The Pokémon Company, Nintendo or Limitless.

Is my data private?

Yes. Your decks, games and reviews are only visible to you unless you share them. See the privacy policy.

Stop believing in the heart of the cards.
Start reading it.

Start free
Start free →