MBC · Player guide
mystery booster commander rulebreaker
Rulebreaker allows cards outside a commander's color identity, directly changing deck construction rules. [Release notes] Its listed Commander legality date is 2026-11-13. [Source]
| Item | Details |
|---|---|
| Set | Mystery Booster Commander Edition, MBC. [Source] |
| Rulebreaker cards | 8 cards. [Source] |
| Permission | Rulebreaker allows cards outside a commander's color identity, directly changing deck construction rules. [Release notes] |
| Design involvement | The Commander Format Panel participated in the design. [Source] |
| Commander legality | 2026-11-13. [Source] |
The exception
How Rulebreaker changes color identity restrictions
Rulebreaker allows cards outside a commander's color identity, directly changing deck construction rules. [Release notes]
The significance is the change to which cards can enter a deck. This may create different deckbuilding directions, but evaluating a particular commander requires its exact card text.
Disclosed names
The disclosed Rulebreaker commanders
The disclosed names include five monocolored commanders and the colorless representative The Everforger. [Source]
Tolabow, Loch Rascal
Tolabow interacts with instants and sorceries, and the set article describes its Rulebreaker permission as allowing the inclusion of red spells. [Source]
That suggests an instant-and-sorcery deck direction; when building around it, consult the card text update noted in the same article rather than relying on the printed wording alone. [Source]
The Unluckiest Planeswalker
The Unluckiest Planeswalker belongs to the Rulebreaker cycle described as allowing certain cards outside the commander's color identity and any basic land cards. [Source]
The cardlist identifies negative Auras and Curses as its best fit, suggesting a commander deck built around those cards. [Source]
Maular, the Next Evolution
Maular's Rulebreaker permission allows creature cards with mana value 7 or greater in the deck, including cards outside its color identity; the cycle also permits any basic land cards. [Source]
That suggests a commander deck focused on high-mana-value creatures and attacking, matching the article's description of its attack-related design. [Source]
Format design
The Commander Format Panel's involvement
The Commander Format Panel participated in the design of the Rulebreaker cards. [Source]
As a design interpretation, Rulebreaker makes deck construction itself a place for experimentation.
Player questions
Frequently asked questions
What rule does Rulebreaker change?
Rulebreaker allows cards outside a commander's color identity, directly changing deck construction rules. [Release notes]
When can I use Mystery Booster Commander Rulebreaker cards in Commander?
The listed Commander legality date is 2026-11-13. [Source]