Volcanic Hammer

You create a hammer large hammer made of volcanic glass and magma and hurl it at one creature within range. Make a ranged spell attack against the target. On a hit, the target takes 1d6 bludgeoning damage and 1d6 fire damage. Hit or miss, the hammer then explodes. The target and each creature within 5 feet of it must succeed on a Dexterity saving throw or take 2d6 fire damage.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the fire damage increases by 1d6 for each slot level above 1st.