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Magic: The Gathering Comprehensive Rules Changes

Core Set - Ninth Edition to Ravnica: City of Guilds (Single Change View)

General changes

Old rule (Core Set - Ninth Edition) New rule (Ravnica: City of Guilds)

Ability

"Ability" and "effect" are often confused with one another. An instruction in an object's text is an ability. The result of following such an instruction is an effect. For more information, see section 4, "Spells, Abilities, and Effects." When an activated ability is played, it goes onto the stack and stays there until it resolves or is countered. When an effect states that an object "gains" or "has" an ability, it's granting that object an ability. If an effect defines a property of an object ("[card or permanent] is [property]"), it's not granting an ability. For example, an Aura might read, "Enchanted creature is red." The Aura isn't granting an ability of any kind; it's simply changing the enchanted creature's color to red.

Ability

"Ability" and "effect" are often confused with one another. An instruction in an object's text is an ability. The result of following such an instruction is an effect. For more information, see section 4, "Spells, Abilities, and Effects." When an activated ability is played, it goes onto the stack and stays there until it's countered, it resolves, or it otherwise leaves the stack. When an effect states that an object "gains" or "has" an ability, it's granting that object an ability. If an effect defines a property of an object ("[card or permanent] is [property]"), it's not granting an ability. For example, an Aura might read, "Enchanted creature is red." The Aura isn't granting an ability of any kind; it's simply changing the enchanted creature's color to red.