Draconic Persuasion

(Races of the Dragon, page 104, DnD 3.5)

[Draconic]

Your arcane talents lend you a great deal of allure.

Prerequisite

Draconic Heritage, sorcerer level 1st

Benefit

After you cast an arcane spell, you gain a bonus equal to 1-1/2 times the spell's level on your next Bluff, Intimidate, or Perform check. The check must be made before the end of the next round.