Disrupting Smite

5th-level evocation

Casting Time: 1 bonus action
Range: Self
Components: V
Duration: Concentration, up to 1 minute

The next time you hit an undead creature with a melee weapon attack during the spell’s duration, your weapon bursts with spiritual energy, and the attack deals an additional 8d6 radiant damage to the target. If the target has 25 hit points or fewer after taking this damage, it must succeed on a Wisdom saving throw or be destroyed. On a successful saving throw, the creature becomes frightened of you until the end of your next turn.