Mockery (Su)
Source: Advanced Player's Guide, p. 81
A court bard of 3rd level or higher can subtly ridicule and defame a specific individual. The bard selects one target who can hear his performance. That individual takes a –2 penalty on Charisma checks and Charisma-related skill checks as long as the bard continues performing. This penalty increases by –1 every four levels after 3rd. Mockery is a language-dependent, mind-affecting ability that relies on audible components. This performance replaces inspire competence.