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 70
Expelled Heltor Silenos Leader. He is a fanatic of Baium, and believes that Baium must be resurrected to wipe out all other tribes holding the flow of the continent at present through Baium's power. Due to his extreme arguments, he was expelled from his tribe. However, he is still promoting the plan to resurrect Baium around the Tower of Insolence along with his followers after failing to give up on his idea.