Oath of Truth

Oath Spells

3rd: Command, Healing Word

5th: Silence, Zone of Truth

9th: Sending, Tongues

13th: Confusion, Locate Creature

17th: Legend Lore, Scrying

Channel Divinity

Detect Lies. As an Action for the next 10 minutes you can detect any lies told to you or allies within 30 ft of you. You may not know the context of the truth but you understand that there is something being hidden. You get advantage on persuasion or insight checks against creatures lying.

 

Force Truth. You can force a creature to answer your question truthfully. You can force as many questions equal to your modifier as long as these questions are asked to the same creature within a 10 minute period. You must take a long rest to regain this ability. 

Aura of Truth

Deception checks against you and allies within 30 ft of you have disadvantage. Persuasion checks you and allies within 30ft of you have advantage as long as it’s completely honest. No lie can be told directly to you. 

Purity of Words

Once per long rest you can use your reaction to alter a spell being cast within 60 ft of you.  Add, remove, or alter one letter of a spell being cast to change its result. The resulting word must still make sense and the result of the spell is ultimately up to the DM to see what happens.

Absolute Truth

As an action you can emit an aura of absolute truth. For one minute you and any creature within 30ft of you can choose to alter its truth. One ally can choose to hit when it misses or pass a failed save or check. This can also affect an enemy in the opposite way. This cannot be used again until a long rest.