Devil's Tongue( Fiendish Codex II: Tyrants of the Nine Hells, p. 83)
You gain a devil's talent for trickery and deceit. Your words form a verbal maze that clouds your opponent's mind. As a physical mark of this ability, your tongue becomes forked like a serpent's.
Devil's Favor (FCII) , CHA 15,
As a standard action, you can speak soothing words of friendship and amity to any opponent within 60 feet. The target must be able to hear and understand you. The target must make a Will save (DC 10 + 1/2 your HD + your Cha modifi er) or be dazed for 1 round. In addition, he is rendered fl at-footed. You can use this ability a number of times per day equal to the number of devil-touched feats you possess. You can choose to spend two uses of this ability to use it as a swift action rather than as a standard action. This is a mind-affecting, language-dependent, supernatural ability.