As long as you can see the target (even if it has cover) radiant holy flame envelops it, dealing 1d8 radiant damage.
This spell’s damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).
Komanov’s Purifying Flame. When a target damaged by this spell is undead, has the Evil trait, or is vulnerable to radiant damage, it is rattled for the next minute. At the end of each of its turns, the target may make a Wisdom saving throw to end the effect on itself.