A creature with this feat hates aberrant beholders so strongly that it gains bonuses when fighting them.
Prerequisite: True beholder or must have aberration as a favored enemy.
Benefit: The creature gains a +2 morale bonus on attack rolls, weapon damage rolls, touch Armor Class, and saving throws when fighting a beholderkin.
Special: If the creature is a true beholder, the benefits of this feat apply to other true beholders as well as to beholderkin.
Source: Lords of Madness, page 44.