Prerequisite: Alchemist 6

Benefit: When the alchemist creates a bomb, he can choose to have it inflict sonic damage. Concussive bombs deal 1d4 points of sonic damage, plus 1d4 points of sonic damage for every odd-numbered level, instead of 1d6. Creatures that take a direct hit from a concussive bomb are deafened for 1 minute unless they succeed at a Fortitude save.