Magic: The Gathering Comprehensive Rules Changes - Core Set - Ninth Edition to Ravnica: City of Guilds

Old rule (Core Set - Ninth Edition)	New rule (Ravnica: City of Guilds)
Becomes [Click to view all changes.]
Becomes Some trigger events use the word "becomes" (for example, "becomes tapped" or "becomes blocked"). These trigger only at the time the named event happens-they don't trigger if that state already exists or retrigger if it persists. For example, "becomes tapped" triggers only once and only when a permanent's status changes from untapped to tapped.	Becomes Some trigger events use the word "becomes" (for example, "becomes tapped" or "becomes blocked"). These trigger only at the time the named event happens-they don't trigger if that state already exists or retrigger if it persists. For example, "becomes tapped" triggers only when a permanent's status changes from untapped to tapped.

Old rule (Core Set - Ninth Edition)

New rule (Ravnica: City of Guilds)

Becomes

Some trigger events use the word "becomes" (for example, "becomes tapped" or "becomes blocked"). These trigger only at the time the named event happens-they don't trigger if that state already exists or retrigger if it persists. For example, "becomes tapped" triggers only once and only when a permanent's status changes from untapped to tapped.

Becomes

Some trigger events use the word "becomes" (for example, "becomes tapped" or "becomes blocked"). These trigger only at the time the named event happens-they don't trigger if that state already exists or retrigger if it persists. For example, "becomes tapped" triggers only when a permanent's status changes from untapped to tapped.