G'day. Working on my first major homebrew variation. Hopefully it's something that points my players toward getting into the thick of things and maybe a little inter-party tension. If you can point out any problems or missed opportunities, it's much appreciated!

Oath of Revelation

Tenets

• Glory of truth - Establishing truth serves as the foundation for goodness and beauty.
• Unveil secrets - Truth should always be spoken and falsehoods always countered.
• Expose corruption
 - Rumors of those in power abusing the truth kindle your ire.
• Scour darkness - Whatever obscures clear vision promotes corruption and secrets. The way must be cleared for truth to ascend.

Oath Spells (from Divination school):

• Beast Bond
, Hunters Mark
• Detect Thoughts, 
Mind Spike
• Clairvoyance, 
Tongues
• Divination, 
Locate Creature
• Commune, 
Telepathic Bond

Channel Divinity:

• Word of Insight - Use your bonus action to gain Adv on attacks vs 1 target

• Brutal Regret - Use your action to magically evoke memories that overwhelm 1 creature. The creature must have an INT of 7 or higher. It makes a WIS saving throw. If it fails, it is burdened with 1 level of Exhaustion.

Lvl 7 Aura of Foresight - You and companions gain a bonus on Initiative equal to your proficiency bonus

Lvl 15 Insightful Defense - Use your reaction to add CHA bonus to your AC against 1 melee attack. If the attack misses, make one weapon attack on that attacker.

Lvl 20 Divine Discerning - Use your bonus action to activate the following effects for 1 minute: 

• Truesight
• Melee weapon attacks score a critical hit on a roll of 19 or 20
• Speak a hidden truth about 1 creature you can see, forcing it to make a CHA saving throw. If it fails, it is Stunned for a number of rounds equal to your CHA bonus (but can make 

The second Channel Divinity is a little strong, but I’m not sure what I’d do to it to balance it.

A couple questions on the lvl 20 feature:

• Shouldn’t it be called Divine Discernment? (Or I guess it could be Divinely Discerning)
• What’s the range on the Truesight?
• Is any kind of action required to activate the last bullet point?

For the first channel divinity, how long does the advantage last? A turn? A round? A minute?

For Aura of Foresight, I always recommend against having class abilities that scale off of PB because of multiclass shenanigans. Perhaps just Advantage on the roll? Or bonus = to Cha mod? Or perhapse mirror PB, but have the bonus specifically scale off of Class level (so +3 @ 7th, +4 @ 9th, +5 @ 13th, +6 @ 17th levels)?

For that last bullet point of Divine Discerning, that seems a little weak considering how many opponents the Paladin will not know any “hidden truths” about. Just putting that out there.

Thanks for the input. I'll revise per your questions!