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Magic: The Gathering Comprehensive Rules Changes

Shadowmoor to Eventide (Single Change View)

General changes

Old rule (Shadowmoor) New rule (Eventide)

407.2.

An effect that sets an object's characteristic, or simply states a quality of that object, is different from an ability granted by an effect. When an object "gains" or "has" an ability, that ability can be removed by another effect. If an effect defines a characteristic of the object ("[permanent] is [characteristic value]"), it's not granting an ability. (See rule 405.2.)

Example: An effect reads, "Enchanted creature has 'This creature is an artifact creature.'" This effect grants an ability to the creature that can be removed by other effects. Another effect reads, "Enchanted creature is an artifact creature." This effect simply defines a characteristic of the creature. It doesn't grant an ability, so effects that would cause the creature to lose its abilities wouldn't cause the enchanted creature to stop being an artifact.

402.10.

An effect that sets an object's characteristic, or simply states a quality of that object, is different from an ability granted by an effect. When an object "gains" or "has" an ability, that ability can be removed by another effect. If an effect defines a characteristic of the object ("[permanent] is [characteristic value]"), it's not granting an ability. (See rule 405.2.)

Example: An effect reads, "Enchanted creature has 'This creature is an artifact creature.'" This effect grants an ability to the creature that can be removed by other effects. Another effect reads, "Enchanted creature is an artifact creature." This effect simply defines a characteristic of the creature. It doesn't grant an ability, so effects that would cause the creature to lose its abilities wouldn't cause the enchanted creature to stop being an artifact.