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 noble that led the Antharas expedition with the Land Dragon Punitive Force during the time of Elmoreden Kingdom. Due to his foolishness, the entire force was killed and he was also sacrificed to the claw of the Land Dragon. To laugh at his stupidity, Antharas resurrected Ishka, and put him in charge of protecting the Dragon Valley.