Casting Time: 1 action
Range: 150 feet
Components: V, S
Duration: Concentration, up to 1 minute
A swirling cloud of smoke shot through with white- hot embers appears
in a 20-foot-radius sphere centered on a point within range. The cloud
spreads around corners and is heavily obscured. It lasts for the
duration or until a wind of moderate or greater speed (at least 10 miles
per hour) disperses it.
When the cloud appears, each creature in it must make a Dexterity saving
throw. A creature takes 10d8 fire damage on a failed save, or half as
much damage on a successful one. A creature must also make this saving
throw when it enters the spell's area for the first time on a turn or
ends its turn there.
The cloud moves 10 feet directly away from you in a direction that you choose at the start of each of your turns.