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 65
Loyal Guardian protecting the Garden of Eva, Goddess Eva's resting place. It's been a long time since the goddess stopped visiting the garden, but he still stays here to watch out for reckless invaders entering the holy goddess's resting place, and protects this place.