Metin Stone Event

When does the Zombie Event happen?
On our server was introduced system Metin stones. From time to time the depot appears random stone Metin. The player will be informed by the appearance of the message: "[Name Stone] has been spawned! Find and defeat it!" The players task is to destroy the stone, but it is not so easy. Stones depending on the amount HP Summon monsters, which hinder you this task. The attacker should remember that the only way to destroy the stone is constantly getting rid of August the summons. A place where the stone may appear:

Fire Stone HP: 350 000

Icy Stone HP: 350 000

Wind Stone HP: 400 000
Earth Stone HP: 350 000