Acidic Fire Blast

A line of fire shoots from your hands, it starts to accumulate into an orb at the front and bursts into a ball of acid on impact. The target must succeed on a dexterity check, on a failed save the target takes 6d10 acid damage and an additional 5d6 fire damage, on a succeeded save the target takes half the damage

At Higher Levels. When you cast this spell using a spell slot of 8th level or higher, the fire damage increases by 1d6 for each slot level above 7th.