Transmutation
Level: Bard 4, Dragon 4, Sorcerer 4, Wizard 4
Components: V, S
Casting Time: 1 standard action
Range: Personal
Target: You
Duration: 10 minutes/level (D)
As you speak the words of the spell and inscribe the motions in the air, your voice deepens, taking on a resonance that makes the listener think of authority, power and great age.
You gain a +10 enhancement bonus on Bluff, Diplomacy and Intimidate checks. You also gain the ability to speak and understand (but not read) Draconic.
At any time before the spell’s duration expires, you can use a standard action to target a creature with a suggestion effect, which functions identically to the spell of that name, including range, duration and other effects. Doing this causes the voice of the dragon spell to end, though the suggestion itself lasts for the normal duration thereafter.
Special: Sorcerers cast this spell at +1 caster level.
Source: Spell Compendium (Page 232)