Lava Burst
1st-level Evocation
Casting Time: 1 action
Range: 30 feet
Components: VSM (a chunk of volcanic rock)
Duration: Instantaneous
You launch a gout of flaming energy at a creature within range. Make a ranged spell attack against the target. If the attack hits, the creature takes 3d8 fire damage. If the creature is suffering from a burning effect, it deals 3d12 fire damage instead.
At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d8 (or 1d12 against burning targets) for each spell level above 1st.
Source: Homebrew