Complex sentence: The only substantive changes were that now a pack "will always attack a displacer beast"; and the blink dog's alignment was changed to Lawful Good, meaning that they would often be natural allies of players rather than opponents.
Split into simpler sentences: The only substantive change was that now a pack "will always attack a displacer beast". The blink dog's alignment was changed to Lawful Good, meaning that they would often be natural allies of players rather than opponents.