Agile Tyrant
(Lords of Madness, page 44, DnD 3.5)
[Monster]
A creature with this feat develops longer, more flexible eyestalks than its kin. This extra flexibility allows it to bring additional eye rays to bear against its foes.
Prerequisite
True beholder or beholderkin
Benefit
The creature can direct an extra eye ray into a single 90-degree arc.