// Lab project · Transmission 001

Lotus Lens.

An open-source MTG Arena draft copilot. Draft, build, play and debrief, on your own machine.

by Hidden Lotus Tech

Install Soon What it does

What it does

A quiet second opinion for every Limited event: from P1P1 to the last game.

Draft

Ranks each pack as you see it, tracks your colors and signals, and shows what's likely to wheel.

Build

Checks your 40: curve, creature count, removal, and a mana-base audit so your splash actually casts.

Play

A calm in-match view of draw odds, outs and the threats that matter. Off by default in tournament mode.

Debrief

Turn-by-turn replays and a short postmortem after each match and event, so you learn from the run.

Local-first

Runs on your PC. Your logs and decks stay there. No account needed.

Read-only

It only reads the Player.log file Arena already writes. It never touches the game, injects code or clicks for you.

Bring your own AI

Connect Claude, Cursor or a local model (Ollama) through MCP, and ask about your draft in plain words.

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Install Coming soon

Not released yet. The commands below are placeholders and will not work until launch.

Any OS (Node.js 22+)

npx lotus-lens

Windows: two commands

winget install OpenJS.NodeJS.LTS
npm install -g lotus-lens

Windows: Scoop

scoop bucket add hlt https://github.com/<owner>/scoop-bucket
scoop install lotus-lens

macOS: Homebrew

brew install <owner>/tap/lotus-lens

macOS / Linux

npm install -g lotus-lens
lotus-lens doctor   # checks your log, Detailed Logs setting and data

First run: in Arena, turn on Options → Account → "Detailed Logs (Plugin Support)", then restart Arena.

Pricing Coming soon

Free

For everyone. Forever. Open source.

The full app: draft, build, play, debrief
MCP for your own AI (Claude, Cursor, Ollama)
No ads, no account

npx lotus-lens

Edition

~$12

For players who want it to just work. Pay once, own it.

One-click installer
Automatic app and set updates
Extras, plus starter coach credits
No subscription, no DRM

Same open source, packaged for you

Coach credits

from $5

For players who want an AI coach without any setup.

Hosted coach for drafts, builds and reviews
Pay as you go, credits don't expire
Works with the free app too

Optional. Your own AI stays free.

Everything starts free. The Edition makes it effortless. Credits add a coach. Use any mix.

Support the project ♥ (coming soon)

Why this is free

Every card and analysis feature stays free, for good.

Fan content

Lotus Lens is unofficial fan content. Wizards' Fan Content Policy asks that it stay free to access, and it will.

Open source

The code is MIT-licensed. You can read it, build it and run it yourself.

What money pays for

Optional convenience (installers, auto-updates), AI compute for the hosted coach, set-data upkeep and hosting.

FAQ

Is it allowed? Will it get me banned?

Lotus Lens only reads the log file Arena writes, the same approach long-standing community trackers use. It never modifies, injects into or automates the game. It's unofficial and not endorsed by Wizards. Use it at your own risk.

Can I use live advice in tournaments?

Don't use live in-match advice in Qualifiers or the Arena Championship. Tournament mode turns live advice off and keeps prep and review on. Lotus Lens suggests it when it sees those events.

What data does it read, and where does it go?

It reads your local Player.log and keeps everything on your machine. There's no telemetry. Bring-your-own-AI sends only what your own assistant asks for. The optional hosted coach, when it exists, gets a minimal game summary only: never your full log, account tokens or opponent names.

Do I need to pay or make an account?

No. The free version is the full app, with no account.

Which platforms?

Windows first (live Arena). macOS is experimental. Linux works for analysis and MCP.

Where do the card ratings come from?

Ratings come from 17Lands' public data, credited below, and appear for a new set from its twelfth day on Arena. Card data comes from Scryfall.