Killing stars rely on ambush) When you are leveling up and fireballs fall from the sky, those who are not quick to react might think it's the monster attacking you. After you die, you realize that a pigeon (Celestial race) or a crow (Demon race) had flown above your head at some point without you noticing. No one in their right mind would come over and circle in front of you to tell you they've arrived and ask you to kill them.