Rules history

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See what moved, changed, appeared, or was removed between any two Comprehensive Rules releases.

Comparison

19 June 2026 to 7 August 2026

39 changed rules

Added 15Removed 2Changed 10Moved 15
AddedSubrule 122.1jDetails

A hone counter on an Equipment gives +1/+0 to any creature that Equipment is attached to.

Open 7 August 2026
ChangedRule 310.7Details

If a Siege battle’s defense is 0 and it isn’t the source of an ability which has triggered but not yet left the stack, it’s put into its owner’s graveyard. (This is a state-based action. See rule 704.)

Open 19 June 2026Open 7 August 2026
AddedRule 310.8Details

If a non-Siege battle’s defense is 0, it’s put into its owner’s graveyard. (This is a state-based action. See rule 704.)

Open 7 August 2026
MovedRule 310.9Details

Rule 310.8 to Rule 310.9

Each battle has a player designated as its protector.

Open 19 June 2026Open 7 August 2026
ChangedMovedSubrule 310.9aDetails

Subrule 310.8a to Subrule 310.9a

As a battle enters the battlefield, its controller chooses a player to be its protector. Which players may be chosen as its protector are determined by its battle type (see rule 310.1112). If it has no battle types, only its controller becomescan be its protector.

Open 19 June 2026Open 7 August 2026
MovedSubrule 310.9bDetails

Subrule 310.8b to Subrule 310.9b

A battle’s protector can never attack it. A battle can be attacked by any attacking player for whom its protector is a defending player. Notably, a Siege battle can be attacked by its own controller.

Open 19 June 2026Open 7 August 2026
MovedSubrule 310.9cDetails

Subrule 310.8c to Subrule 310.9c

A battle’s protector may block creatures attacking that battle with creatures they control. Creatures controlled by other players can’t block those attackers.

Open 19 June 2026Open 7 August 2026
MovedSubrule 310.9dDetails

Subrule 310.8d to Subrule 310.9d

If a battle’s protector is a different player than its controller, all rules and effects that refer to the “defending player” relative to a battle that is being attacked refer to that battle’s protector rather than its controller. See rule 508.5.

Open 19 June 2026Open 7 August 2026
MovedSubrule 310.9eDetails

Subrule 310.8e to Subrule 310.9e

If a rule or effect refers to the player who protects a battle, it means the player who is that battle’s protector.

Open 19 June 2026Open 7 August 2026
MovedSubrule 310.9fDetails

Subrule 310.8f to Subrule 310.9f

A battle can have only one protector at a time. A battle’s protector stops being its protector if another player becomes its protector.

Open 19 June 2026Open 7 August 2026
MovedSubrule 310.9gDetails

Subrule 310.8g to Subrule 310.9g

A battle’s protector doesn’t change if it stops being a battle or it becomes a copy of another battle.

Open 19 June 2026Open 7 August 2026
MovedRule 310.10Details

Rule 310.9 to Rule 310.10

A battle can’t be attached to players or permanents, even if it is also an Aura, Equipment, or Fortification. If a battle is somehow attached to a permanent, it becomes unattached. This is a state-based action (see rule 704).

Open 19 June 2026Open 7 August 2026
ChangedMovedRule 310.11Details

Rule 310.10 to Rule 310.11

If a battle that isn’t being attacked has no player designated as its protector, or its protector is a player who can’t be its protector based on its battle type, its controller chooses an appropriate player to be its protector. If no player can be chosen this way, the battle is put into its owner’s graveyard. This is a state-based action (see rule 704).

Open 19 June 2026Open 7 August 2026
AddedRule 310.12Details

Some battles have the subtype Siege. Sieges are subject to special rules.

Open 7 August 2026
MovedSubrule 310.12aDetails

Subrule 310.11a to Subrule 310.12a

As a Siege enters the battlefield, its controller must choose its protector from among their opponents. Only an opponent of a Siege’s controller can be its protector.

Open 19 June 2026Open 7 August 2026
MovedSubrule 310.12bDetails

Subrule 310.11b to Subrule 310.12b

Sieges have the intrinsic ability “When the last defense counter is removed from this permanent, exile it, then you may cast it transformed without paying its mana cost.”

Open 19 June 2026Open 7 August 2026
ChangedRule 506.4Details

A permanent is removed from combat if it leaves the battlefield, if its controller or protector changes, if it phases out, if an effect specifically removes it from combat, if it’s a planeswalker that’s being attacked and stops being a planeswalker, if it’s a battle that’s being attacked and stops being a battle, or if it’s an attacking or blocking creature that regenerates (see rule 701.19), stops being a creature, or becomes a battle. A creature that’s removed from combat stops being an attacking, blocking, blocked, and/or unblocked creature. A planeswalker or battle that’s removed from combat stops being attacked.

Open 19 June 2026Open 7 August 2026
ChangedSubrule 605.1aDetails

An activated ability is a mana ability if it meets all of the following criteria: it doesn’t require a target (see rule 115.6), it could add mana to a player’s mana pool when it resolves, and it’s not a loyalty ability. (Seesee rule 606, “Loyalty Abilities.”), and its cost and effect don’t move any card to or from a library. Do not take into account replacement effects that may apply, other than self-replacement effects, when evaluating these criteria.

Open 19 June 2026Open 7 August 2026
AddedRule 701.70Details

Recruit

Open 7 August 2026
AddedSubrule 701.70aDetails

“Recruit” means “Draw a card, then discard a card. If you discarded a nonland card this way, create a 1/1 white Human Soldier creature token.”

Open 7 August 2026
AddedRule 702.195Details

Storied

Open 7 August 2026
AddedSubrule 702.195aDetails

Storied is a static ability. It means “Any time you control three or more permanents that are artifacts, Sagas, and/or legendary and you don’t have an enduring story, you have an enduring story for the rest of the game.”

Open 7 August 2026
AddedSubrule 702.195bDetails

Enduring story is a designation that has no rules meaning other than to act as a marker that other rules and effects can identify. Any number of players may have the enduring story designation at the same time.

Open 7 August 2026
AddedSubrule 702.195cDetails

After a player gets an enduring story, continuous effects are reapplied before the game checks to see if the game state or preceding events have matched any trigger conditions.

Open 7 August 2026
MovedSubrule 704.5aaDetails

Subrule 704.5z to Subrule 704.5aa

If a player controls a permanent with start your engines! and that player has no speed, that player’s speed becomes 1. See rule 702.179, “Start Your Engines!”

Open 19 June 2026Open 7 August 2026
ChangedSubrule 704.5vDetails

If a Siege battle has defense 0 and it isn’t the source of an ability that has triggered but not yet left the stack, it’s put into its owner’s graveyard.

Open 19 June 2026Open 7 August 2026
AddedSubrule 704.5wDetails

If a non-Siege battle has defense 0, it’s put into its owner’s graveyard.

Open 7 August 2026
ChangedMovedSubrule 704.5xDetails

Subrule 704.5w to Subrule 704.5x

If a battle has no player in the game designated as its protector and no attacking creatures are currently attacking that battle, that battle’s controller chooses an appropriate player to be its protector based on its battle type. If the battle has no battle type, its controller must be chosen. If no player can be chosen this way, the battle is put into its owner’s graveyard. See rule 310, “Battles.”

Open 19 June 2026Open 7 August 2026
AddedSubrule 704.5yDetails

If a battle’s protector is a player who can’t be its protector, that battle’s controller chooses an appropriate player to become its protector. If no player can be chosen this way, the battle is put into its owner’s graveyard. See rule 310, “Battles.”

Open 7 August 2026
MovedSubrule 704.5zDetails

Subrule 704.5y to Subrule 704.5z

If a permanent has more than one Role controlled by the same player attached to it, each of those Roles except the one with the most recent timestamp is put into its owner’s graveyard.

Open 19 June 2026Open 7 August 2026
ChangedSubrule 722.3aDetails

Some spells and abilities cause a permanent with a prepare spell to become prepared or state that a permanent enters prepared. If that permanent has the alternative characteristics of a prepare spell, this gives the permanent the “prepared” designation. Prepared is a designation that acts as a marker which rules and effects can identify. A permanent can’t gain this designation unless it has a prepare spell,. Additionally, a permanent can’t gain this designation if the permanent already has it.

Open 19 June 2026Open 7 August 2026
AddedEnduring StoryDetails

A designation a player can have. The storied keyword causes a player to get this designation once they control three permanents that are artifacts, Sagas, and/or legendary. See rule 702.195, “Storied.”

AddedHone CounterDetails

A counter on an Equipment that gives the equipped creature +1/+0. See rule 122, “Counters.”

ChangedProtect, ProtectorDetails

Each battle has a player designated as its protector, and that player protects that battle. See rule 310.89.

AddedRecruitDetails

A keyword action that lets a player draw a card, discard a card, and then create a creature token if a nonland card was discarded. See rule 701.70, “Recruit.”

ChangedSiegeDetails

A battle subtype. Only an opponent of a Siege’s controller can be its protector. When the last defense counter is removed, its controller exiles the Siege, then they may cast it transformed without paying its mana cost. See rule 310.1112.

AddedStoriedDetails

A keyword causing a player to get the enduring story designation once they control three or more permanents that are artifacts, Sagas, and/or legendary. See rule 702.195, “Storied.”

RemovedRule 310.11Details

All currently existing battles have the subtype Siege. Sieges are subject to special rules.

Open 19 June 2026
RemovedSubrule 704.5xDetails

If a Siege’s controller is also its designated protector, that player chooses an opponent to become its protector. If no player can be chosen this way, the battle is put into its owner’s graveyard. See rule 310, “Battles.”

Open 19 June 2026