Resources

Magic: The Gathering Comprehensive Rules Changes

Masters Edition to Lorwyn (Single Change View)

General changes

Old rule (Masters Edition) New rule (Lorwyn)

310.2a.

Each attacking creature and each blocking creature will assign combat damage equal to its power. Creatures with 0 or less power don't assign combat damage.

310.2a.

Each attacking creature and each blocking creature will assign combat damage equal to its power. Creatures that would assign 0 or less damage this way don't assign combat damage at all.