Lunar Aura (3.5e Feat)
From D&D Wiki
Your skin glow with your ancestor power, the light seem to have a strange effect upon others.
Benefit: You produce light as the Light spell. Every creatures within 10 feet (+5 per lunar heritage feat, including this one) of you must make a will save (DC10 + 1/2HD + Cha modifier) or take a -2 penalty to will saves and Wisdom-based skill check against you. Both abilities can be resumed and suppressed as a free action but both must be activated or deactivated at the same time.