Speak True

Divination cantrip
Casting time: 1 bonus action
Range: Self
Target: --
Components: V, S
Duration: 1 minute
Classes: Artificer, Bard, Cleric, Druid, Sorcerer, Wizard
Subclasses:

When you cast this spell, your honest intentions become clearer to those around you. When a creature makes a Wisdom (Insight) ability check to determine whether or not you are telling the truth for the duration, it adds a bonus equal to your spellcasting ability modifier to its roll.