Oath of Truth

The oath of truth binds a paladin to truth, justice, and the ways of light. Sometimes called Shining knights or Lantern knights, these paladins are different from those who take the Oath of Devotion. They are often plagued by questions and doubt, and to seek to expose the answers to every question they pose. Those who take this oath align themselves with the light because it exposes that which hides in the darkness, but a blinding light that destroys others is not what they seek. They adorn their armor with places to hold a lantern and try to keep their armor as reflective as possible so that those who face them must face themselves when they do so.

Oath of Truth spells

3rd - Faerie Fire, Comprehend Languages
5th - Zone of truth, See Invisibility
9th - Daylight, Speak with Dead
13th - Locate creature, Freedom of Movement
17th - Scrying, Greater Restoration

Channel Divinity

When you take this oath at 3rd level, you gain the following two channel divinity options.

• Turn on the Light
  • You can use your Channel Divinity to bring light to your surroundings. As an action you can emit bright light in a 30 ft radius originating from you, and dim light for an additional 30 ft for one minute. Magical Darkness within the bright light is dispelled, all creatures within the light cannot benefit from invisibility and have disadvantage on deception and stealth checks
• Destroy All Falsehoods
  
  
  • As a bonus action you can make a Wisdom (Insight) check against a creature you can see that isn't incapacitated contested by the target's Charisma (Deception) check. If you succeed, all subsequent Wisdom (Insight) checks against the target have advantage plus whenever you strike the target Divine Smite, you deal an additional 1d8 radiant damage.
  • this benefit last for 10 minutes or ends early if the target is killed or incapacitated.

Aura of Clarity

Starting at 7th level, you and friendly creatures within 10 ft of you can't be charmed, confused, or afraid while you are conscious.

At 18th level, the range of this aura increases to 30 ft.

Constant Vigil

Starting at 15th level, you can't be surprised, and attacks made from hiding do not gain advantage against you. Additionally, you have advantage on ability checks to determine of something is an illusion and advantage on saving throws against something you have determined is an illusion 

Avatar of Truth

• You gain true sight up to 120 ft
• A creature that is targeted by your Destroy All Falsehoods can no longer hide from you. No matter what , you know its location and you also know whether it has spoken a lie or not. It doesn't have to be near you for you to know whether it lied or not.
• Whenever you use Destroy All Falsehoods you can use it against a number of creatures equal to your charisma modifier