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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)

306.2.

A creature is removed from combat if it leaves play (such as by being destroyed or removed from the game), if it regenerates (see rule 419.6b), if its controller changes, if it stops being a creature, or if an effect removes it from combat. Removed from combat means the creature stops being an attacking, blocking, blocked, and/or unblocked creature.

306.4.

A creature or planeswalker is removed from combat if it leaves play (such as by being destroyed or removed from the game); if its controller changes; if it stops being a creature or planeswalker, respectively; or if an effect removes it from combat. A creature is also removed from combat if it regenerates (see rule 419.6b). A creature that's removed from combat stops being an attacking, blocking, blocked, and/or unblocked creature. A planeswalker that's removed from combat stops being attacked.