Mulligan

MTG Arena & MTGO coach

Every game in the ledger. Every misplay in the margin.

Mulligan runs beside MTG Arena on your PC and keeps a ledger of your games, drafts and decks. Its coach answers mulligan, combat, rules, sideboard and draft questions. Answers are checked against Oracle card text and resolved with deterministic rules logic.

Runs on your Windows PC alongside MTG Arena.

On a phone? Send yourself the link and set it up on your computer. You can still sign in here to ask the coach.

Check a hand →

Tracking and review are free · the AI coach is Mulligan Pro, $9.99/mo

How it works

Play as usual. Mully keeps the books.

  1. 1

    Install the agent

    A small Windows app, about 24 MB. Unzip it, run install.bat, and it starts with your PC.

  2. 2

    Play Arena

    It reads Arena's log while you play. Matches, opening hands, drafts and deck saves land in your ledger.

  3. 3

    Review, then ask

    Open a game or a draft for the numbers, or ask the coach what you should do differently next time.

What's in the ledger

Four chapters, one desk.

  1. I.

    Mulligan decisions

    Paste your opening 7 and your deck for a Keep or Mulligan call with the exact odds to hit your land drops and cast each spell on curve.

    Check a hand free, no sign-in →     the math, not a hunch
  2. II.

    Rules & interactions

    Combat damage, the layer system, priority, and keyword interactions, resolved against the Comprehensive Rules and Oracle text.

     checked, not guessed
  3. III.

    Sideboard & draft

    Sideboard plans with on-color, format-legal cards. P1P1 picks, signal reading, and in/out swaps for a given matchup.

     pick by pick
  4. IV.

    Game review

    The desktop agent captures your Arena games, drafts, decks, and mulligan tendencies for review.

     turn by turn

Correspondence

Ask it like you'd ask a friend who grinds.

You asked

pack 2 pick 1, I'm committed white aggro but premium black removal keeps coming to me. splash or pivot?
Splash — don't pivot. You've got ~15 white picks banked; throwing them away mid-draft leaves you with a pile of nothing. Black removal is exactly what white aggro lacks to break a ground stall, so take it, prioritize a dual land or fixer on the wheel, and cap the splash at ~3 cards you can cast off two black sources. You'd only pivot if white had been getting cut hard — and it hasn't.
— Mully

Two ways in

The ledger is free. The coach is Pro.

Free

$0

  • Connect the desktop agent
  • Review your games, decks & drafts
  • Mulligan tendencies & win rates
  • Play/draw & matchup breakdowns

Mulligan Pro

$9.99/mo

  • The AI coach — rules, mulligans, combat, manabases
  • Sideboard & draft coaching
  • 300 questions / month
  • Everything in Free