Fascinating Illumination

(Drow of the Underdark, page 50, DnD 3.5)

[General]

The lights you create have the power to hypnotize others.

Prerequisite

Dancing lights as a spell-like ability.

Benefit

You can spend a daily use of your dancing lights spell-like ability to cast hypnotic pattern instead. Your caster level equals your class level. You also gain one extra daily use of your dancing lights spell-like ability.