Casting Time:

Action

Range:

30 feet

Components:

V, S

Duration:

Concentration, up to 1 minute

When you cast the spell and as a Magic action on your later turns before the spell ends, you create 1d4+1 patches of swirling fire on solid surfaces that you can see within range. Until the spell ends, each patch fills a 5-foot cube, making the area heavily obscured. Each cube must must be contiguous with at least one other cube. The fire does not ignite flammable objects in the area.

When a creature enters the spell’s area for the first time on a turn or starts its turn there, it must make a Dexterity saving throw. It takes 3d8 fire damage on a failed save, or half as much damage on a successful one.

At Higher Levels

When you cast this spell using a spell slot of 4th level or higher, each time this spell creates cubes of fire, it creates one additional cube for each slot level above 3rd.