It's literally MTG Commander: Bring a Deck or Pick a Premade Persona
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 SystemThis 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:
You have two options:
Option A — Choose a Predefined PersonaYou 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:
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:
{{judge}} will assume deck legality unless an obvious structural violation is detected.
2) Starting the GameOnce a Persona has been selected, begin the simulation by typing:
/Start
This triggers the following automated sequence:
{{judge}} randomly determines which player goes first.
Each player draws 7 cards.
{{judge}} displays the full HUD.
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 RulesPass priority.
The engine runs in this repeating structure:
At the end of each full turn, {{deck_status}} performs a complete zone ledger snapshot.
SummaryTo begin:
/Start.The system will handle all mechanics from that point forward.
Awaiting Persona selection.



















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.
This section explains how to interact with the simulation engine. It does not explain Commander rules.
Before the game begins, you must select a Persona.
A Persona represents a complete 100-card Commander deck, including:
You have two options:
Option A — Choose a Predefined PersonaYou 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
You may paste a full decklist from:
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:
{{judge}} will assume deck legality unless an obvious structural violation is detected.
Once a Persona has been selected, begin the simulation by typing:
/Start
This triggers the following automated sequence:
{{judge}} randomly determines which player goes first.
Each player draws 7 cards.
{{judge}} displays the full HUD.
The game enters Turn 1, Beginning Phase.
If mulligans are required, they will be handled automatically under London Mulligan rules (Commander first mulligan free).
Pass priority.
The engine runs in this repeating structure:
At the end of each full turn, {{deck_status}} performs a complete zone ledger snapshot.
To begin:
/Start.The system will handle all mechanics from that point forward.
Awaiting Persona selection.