Silver Tongue

Origin Feat 

You gain the following benefits.

Back Tracking. Once per Short rest, you may reroll any Charisma (Deception) check that you make, and may correct any mistake or error you made in your lie up to that point. You must use the new roll if you choose to do so.

Supporting Lie. You can reinforce someone else's lie by adding foundation or correcting any error in their lie. This allows you to add your Charisma (Deception) modifier on top of the result of their skill check, possibly changing the outcome of the lie.