Grand Magister Kreia:
You can get personal points for killing monsters on the Balok Battleground.
The one who delivered the final blow to the monster receives personal point. When you obtain 1000 points or more, the Ivory Tower grants you a reward for participating in the Battle against Balok.
Each adventurer personal points make a sum of total points. When the amount of total points reaches a certain limit intermediate bosses will appear.
There are 5 Types of intermediate bosses, the order, according to witch they are killed, affects the type of Balok that appears later.
Sometimes Lord Balok appears instead of intermediate bosses.
Now go to the Balok Battleground and stop his minions. And I will concentrate and imbue the Magic Circle with magic.