A swirling cloud of smoke filled with fiery ash appears and spreads to a 20-foot radius sphere centered at a point within casting distance. The cloud spreads around corners and heavily obscures the entire area, and persists until the spell ends. The smoke cloud can also be dispersed by moderate or higher-intensity winds (at least 10 miles per hour).
Incendiary Cloud 5e
Level: 8th
Classes: Sorcerer, Wizard
Casting Time: 1 Action
Range: 150 feet
Components: V, S
Duration: Concentration, up to 1 minute
When a smoke cloud appears, each creature within it must make an Agility Immunity; a creature that fails the Immunity takes 10d8 damage from fire, and a creature that succeeds the Immunity takes half the damage. A creature must also make this immunity the first time it enters the cloud of smoke during a turn, or when it ends its turn inside the cloud of smoke.
At the beginning of each of your turns, the smoke cloud moves in a straight line in the direction you specify for 10 Ruler.