Inferno

A wave of flame sweeps out from you in a 30 ft
cone. Each creature in the area makes a Dex save.
A target takes 8d8 fire damage on a failure, or
half damage on a success. This wave of flame
spreads around corners and ignites flammable
objects.
At Higher Levels: When you cast this spell using
a spell slot of 6th level or higher, the fire damage
increases by 1d8 for each slot level above 5th.