When you cast an artificer spell through the firearm, roll a d8, and you gain a bonus to one of the spell's damage rolls equal to the number rolled.
I'm trying to understand how this interacts with spells that (can) have multiple targets:
- How does this affect spells with multiple rays? Do you just add
a d8 to a single ray?
For instance, scorching ray has the caster make a ranged spell attack for each ray, normally doing 2d6 fire damage on a hit. So would one ray of the player's choice do 2d6+1d8 damage, and the rest do 2d6?
- And what about spells with an area of effect? Does it add a d8
to every creature's damage taken (before any halving from
successful saves, etc.)?
For instance, fireball deals 8d6 fire damage on a failed save (halved on a success). So would all creatures in the area take 8d6+1d8 fire damage (or half of that if they pass the Dex save)?