Glibness

8th-Level Transmutation Spell

Source: Player's Handbook

Spell Lists: Bard Spells, Warlock Spells

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.