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Magic: The Gathering Comprehensive Rules Changes

Masters Edition to Lorwyn (Single Change View)

General changes

Old rule (Masters Edition) New rule (Lorwyn)

200.7a.

The owner of an ability on the stack is the player who controlled its source when it was played or triggered. The controller of an ability on the stack is the player who played the ability, or the player who controlled the ability's source when it triggered.

200.7a.

The controller of an activated ability is the player who played the ability. The controller of a triggered ability is the player who controlled the ability's source when it triggered, unless it's a delayed triggered ability. The controller of a delayed triggered ability is the player who controlled the spell or ability that created it.