Hellish Rebuke (Earth)

2-level Evocation

You point your finger, and the ground underneath the creature that damaged you explodes. The creature must make a Dexterity saving throw. It takes 2d10 bludgeoning 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 2nd level or higher, the damage increases by 1d10 for each slot level above 1st.