Needs review
Source: Dragon Magazine #336

Description: Strange whispers and dreadful images sometimes inspire you.

Prerequisites: Bardic Music, Undertone of Heresy, Perform (9 ranks)

Required for: Sickening Sonata

Creatures within 60 feet that can hear you must make a Will save (DC 10 + half your bard level + your Charisma modifier) or be unnerved by the alien tones of your music. The effects of failing the save depend upon the victims hit dice.

Creatures with fewer Hit Dice than you are panicked, those with an equal number of Hit Dice become frightened, and creatures with up to 3 Hit Dice more than you are shaken. All three effects Iasi for a number of rounds equal to 1d4 + your Charisma modifier.

This is a mind-affecting effect that aberrations are immune to.

If a creature has heard your Blasphemous Utterance in the past week it gains a +2 bonus on its save.

Special

Using this ability counts as one of your daily uses of bardic music. Levels in classes that advance bardic music progression count as bard levels for the purposes of this feat.