Volcanic Burst

Bring forth the primal rage of the earth, causing a line of lava to burst out of the ground and cover the ground in a sixty foot line. Those caught in the line must make a Dexterity Saving Throw or take 5d6 Bludgeoning damage and 5d6 Fire damage on a failed save, or half as much on a successful one.  A creature must also make the saving throw for the fire damage when it moves into any effected space for the first time on a turn or ends its turn there.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the bludgeoning and fire damage increases by 1d6 for each slot level above 5th.