Chaotic fight is a new kind of battlefield, in which the participants from the same level are divided into two groups and fight each other. It's not divided according to race, so you may fight both magmar and human, that's why it's called chaotic.
The chaotic battlefield happens 6 times per day. For lv5, it's at 01:00, 10:00, 12:30, 15:30, 19:00, 21:30. The time for different level is a bit different (5 mins difference to seperate them), you may check it in BF tab for details.
At 5 mins before the beginning time, the game will give out a message to players. Player can click it to take part in. After that, player will be teleported to the scorched land and prepare for the fight. At 1 min before the beginning time, there's a last call. After that, all players in the scorched land can't change their equipments and battle potions and scrolls in belts. It needs at least 10 parcitipants to start the fight. That means if the participants are less than 10, the fight won't start and everyone will be teleported back.
You can't use summons and mounts and shadows in this fight. All injuries will be removed after the fight ends.
You also gain bonus valor from chaotic fight. The winner gains 200% valor and 100% XP, the loser gains 150% valor and 66% XP. So it seems better than great battle (10 vs 10) for loser, since the loser will gain better valor : XP ratio instead,