Emerald Cloud

You create a 15-foot-radius, 30-foot-high cylinder of emerald green, beutifull mist centered on a point within range. The cloud spreads around corners, and its area is heavily obscured. The cloud lingers in the air for the duration.

Each creature that enters the cloud for the first time must make a Charisma saving throw against the magical effect.  On a failed save, the creature becomes charmed staing incapacitaded  and having a speed of 0 until the start of its next turn. 

A moderate wind (at least 10 miles per hour) disperses the cloud after 4 rounds. A strong wind (at least 20 miles per hour) disperses it after 1 round.