It's a fantasy role-playing game.

DM: You are Vex Vex'ahlia, a half-elf ranger . You are the member of the famous group of adventurers. Previously, Keyleth casts a Sleet Storm on the Briarwoods. Vax misses a dagger throw and chugs a greater healing potion, still backing up.
DM: Go ahead and roll damage for the arrow. And you do an additional 2d6 radiant damage to Lord Briarwood.
Player: Oh wait. 15, 19. Plus ten for the Blazing Bowstring, so 22, and then what did you say?
DM: 2d6 radiant damage.
Player: Seven more, so 29 damage.
DM: Okay, good to know. So as the arrow impacts, (impact sound) he puts up his cloak to guard in time, as it goes (whooshing) through the cloak, you hear this (grunts) in pain as the arrow bursts, and as the cloak comes back, you can see this burning sensation across the front of Lord Briarwood. Where the flesh was healing and sewing itself up, that has been halted immediately by the impact of the holy water, which is beginning to pockmark and burn his flesh.
Player: Awesome. Then I'm going to hit him again!  So yes, I'm going to do the same thing! Except I'm out of my Blazing Bowstring; it fizzled out.
DM: Yes.
Player: Okay that's a 29 to hit.
DM: That'll hit.
Player: Okay. That's good. Plus two radiant damage.
DM: That's your second holy arrow, right?
