The Arbiter

Ascendant. Witnessing the deeds of the corrupt, divine wrath consumes you, your very touch melting armor.

As a bonus action, you can melt away the armor of the corrupt. The next time you hit a creature with a melee weapon attack, you deal an extra 2d6 radiant damage. The creature’s AC decreases by an amount equal to your proficiency modifier until another attack hits this target before the end of your next turn as you swing a fiery gavel, condemning it for its sins.

You can use this ability once before refreshing it in town using Performing Sacred Rites or Religious Service Downtime actions.

At Higher Levels. The attack deals an extra 1d6 radiant damage when you reach 5th level, 10th level, 15th level, and 20th level.