A creature you touch regains a number of Hit Points equal to 2d8 plus your spellcasting ability modifier.
Using a Higher-Level Spell Slot. The healing increases by 2d8 for each spell slot level above 1.
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 1d8 for each spell slot level above 1.