User blog comment:Roy12345/Ok for real.../@comment-4530673-20120218114907

Om Nom Nom. On topic, i think hallowed (including underground) monsters shouldn't attack you until you get in a certain range (Being on the other side of blocks doesn't count) then they start getting aggressive. If they spawn while you are destroying or building near hallow, they will attack you too. The unicorns shouldn't run fast if you aren't in sight and when one monster sees another one being aggressive, they will attack you too.