If the level of the person who made the greatest contribution is higher than the level of the raid monster by 3 or more levels, then the probability of dropping an item or adena will decrease. If the level difference is nine or more levels, then, the monster will not drop any item or adena.
Raid Boss - Level
A type of mental control device created by the ancient giants' civilization. This was a device that giants made to rule other intelligent life forms, but it is conversely controlling the giants degenerated as slaves after the giants' civilization collapsed. Similar to Core in the Cruma Tower, it is a life form with artificial intelligence that can control all the degenerated servants nearby.