PHB
1-level Evocation
			You point your finger, and the creature that damaged you is momentarily surrounded by hellish flames. The creature must make a Dexterity saving throw. It takes  2d10  fire 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.