Deafening Spell (3.5e Feat)

The sonic volume of your spells reaches deafening levels.

Benefit: Deafening Spell can be used with any spell that deals sonic damage or has the [Sonic] descriptor. In addition to the spell’s normal effect, those affected by the spell must make an additional Fortitude save at the DC of the spell or be deafened for a number of rounds equal to the spell’s level. If the spell already deafens the target, Deafening Spell increases the duration of the deafening effect by a number of rounds equal to the spell’s level. A deafening spell takes up a spell slot one level higher than normal.