Create Bonfire

Duration: 1 minute, Concentration
You create a bonfire on ground that you can see
that fills a 5 ft cube. Any creature in the bonfire's
space when you cast the spell makes a Dex save or
takes 1d8 fire damage. A creature makes the save
when it enters the area or ends it's turn there.
The spell's damage increases by 1d8 when you
reach 5th level (2d8), 11th level (3d8), and 17th
level (4d8).