Rules history
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See what moved, changed, appeared, or was removed between any two Comprehensive Rules releases.
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19 June 2026 to 7 August 2026
39 changed rules
AddedSubrule 122.1jDetails
A hone counter on an Equipment gives +1/+0 to any creature that Equipment is attached to.
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.)
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.)
MovedRule 310.9Details
Rule 310.8 to Rule 310.9
Each battle has a player designated as its protector.
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.
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.
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.
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.
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.
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.
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.
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).
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).
AddedRule 310.12Details
Some battles have the subtype Siege. Sieges are subject to special rules.
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.
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.”
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.
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.
AddedRule 701.70Details
Recruit
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.”
AddedRule 702.195Details
Storied
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.”
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.
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.
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!”
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.
AddedSubrule 704.5wDetails
If a non-Siege battle has defense 0, it’s put into its owner’s graveyard.
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.”
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.”
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.
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.
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.
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.”