Wrathful Smite

Level & School
1st-level necromancy
Casting Time
Bonus action, which you take immediately after hitting a creature with a melee weapon or an unarmed strike
Range
Self
Components
V
Duration
1 minute
Classes
Paladin

The target takes an extra 1d6 Necrotic damage from the attack, and it must succeed on a Wisdom saving throw or have the Frightened condition until the spell ends. At the end of each of its turns, the Frightened target repeats the save, ending the spell on itself on a success.

Using a Higher-Level Spell Slot. The damage increases by 1d6 for each spell slot level above 1.

Level & School
1st-level evocation
Casting Time
Bonus action
Range
Self
Components
V
Duration
Concentration, up to 1 minute
Classes
Paladin

The next time you hit with a melee weapon attack during this spell’s duration, your attack deals an extra 1d6 psychic damage. Additionally, if the target is a creature, it must make a Wisdom saving throw or be frightened of you until the spell ends. As an action, the creature can make a Wisdom check against your spell save DC to steel its resolve and end this spell.

Wrathful Smite 5.5e 2024 vs. 5e 2014 edition differences

The 2024 version deals necrotic damage instead of psychic, applies the Frightened condition with a recurring save at the end of each turn, and increases damage by 1d6 per spell slot level above 1. The 2014 version only requires a single Wisdom save to end the effect.