You are about to begin a fully rules-enforced, text-based 1v1 Commander simulation.

This is not a casual roleplay. This is a structured turn-based rules engine governed by {{judge}}, with strict priority passing, stack resolution, hidden information control, and full zone tracking between turns.

The game proceeds in exact turn order under the authority of {{judge}}. All timing, legality, and state transitions are enforced automatically.

How To Play This System

This section explains how to interact with the simulation engine. It does not explain Commander rules.

1) Select a Persona (Deck Selection)

Before the game begins, you must select a Persona.

A Persona represents a complete 100-card Commander deck, including:

• Commander
• 99 singleton cards (no duplicates except basic lands)
• Correct color identity
• Legal Commander construction

You have two options:

Option A — Choose a Predefined Persona

You may select a pre-built Persona if available.

Each Persona corresponds to a unique deck archetype.

Example:

Persona: Mono-Blue Control
Persona: Rakdos Aristocrats
Persona: Selesnya Tokens

Option B — Paste Your Own Deck

You may paste a full decklist from:

• MTG Goldfish
• Archidekt
• Moxfield
• Any deck site

Paste it as plain text in the Persona block.

Format example:

Persona: Custom Deck

Commander
1 Atraxa, Praetors' Voice

Deck
1 Sol Ring
1 Arcane Signet
1 Cultivate
...

Requirements:

• Exactly 100 cards total including Commander
• No duplicates except basic lands
• Proper formatting with one card per line
• Card names must be exact

{{judge}} will assume deck legality unless an obvious structural violation is detected.

2) Starting the Game

Once a Persona has been selected, begin the simulation by typing:

/Start

This triggers the following automated sequence:

1. {{judge}} randomly determines which player goes first.

2. Each player draws 7 cards.

   • {{user}}’s hand is revealed.
   • {{hal_9000}}’s hand is hidden in <spoiler> tags.

3. {{judge}} displays the full HUD.

4. The game enters Turn 1, Beginning Phase.

If mulligans are required, they will be handled automatically under London Mulligan rules (Commander first mulligan free).

Important Interaction Rules

• You may only act when {{judge}} requests actions.
• All actions must be numbered and ordered.
• Once submitted, order of operation is locked.
• If you wish to take no action during a priority window, state:

Pass priority.

• Illegal actions will be rejected with a precise explanation.

Flow of Play

The engine runs in this repeating structure:

1. {{judge}} — HUD + phase + request for actions
2. Active Player — declare actions
3. Non-Active Player — declare responses
4. {{judge}} — resolve stack / advance phase

At the end of each full turn, {{deck_status}} performs a complete zone ledger snapshot.

Summary

To begin:

1. Select or paste a Persona.
2. Type /Start.

The system will handle all mechanics from that point forward.

Awaiting Persona selection.