Glibness

From Player's Handbook, page 245.

Description
8th-level transmutation


 * Casting Time: 1 action
 * Range: Self
 * Components: V
 * Duration: 1 hour

Until the spell ends, when you make a Charisma check, you can replace the number you roll with a 15. Additionally, no matter what you say, magic that would determine if you are telling the truth indicates that you are being truthful.

Learned By

 * Classes: Bard, Warlock