1st-level Evocation

Casting Time: 1 bonus action (which you take immediately after hitting a target with a Melee weapon or an {@variantrule Unarmed Strike XPHB})

Range: Self

Components: V

Duration: Instantaneous

The target takes an extra 2d8 Radiant damage from the attack. The damage increases by 1d8 if the target is a Fiend or an Undead.

Using a Higher-Level Spell Slot.

The damage increases by 2d8 for each spell slot level above 1.