Flame Arrows

Xanathar's Guide to Everything p. 156,

Level
3
School
Transmutation
Ritual
No
Casting Time
1 action
Range
Touch
Components
V, S
Duration
Concentration, up to 1 hour
Classes
Ranger (Alt. LaserLlama), Druid, Ranger, Sorcerer, Wizard, Artificer

Description

You touch a quiver containing arrows or bolts. When a target is hit by a ranged weapon attack using a piece of ammunition drawn from the quiver, the target takes an extra 1d6 fire damage. The spell's magic ends on a piece of ammunition when it hits or misses, and the spell ends when twelve pieces of ammunition have been drawn from the quiver.

At Higher Levels: When you cast this spell using a spell slot of 4th level or higher, the number of pieces of ammunition you can affect with this spell increases by two for each slot level above 3rd.