Stinking Cloud

3rd-level conjuration
Casting time: 1 action
Range: 90 feet
Target: 20-foot-radius phere within range
Components: V, S, M (a rotten egg or several skunk cabbage leaves)
Duration: Concentration, up to 1 minute
Classes: Bard, Sorcerer, Wizard
Subclasses: Artificer (Alchemist), Artificer (Demolitionist), Artificer (Mechanic), Druid (Circle of the Land), Fighter (Eldritch Knight), Rogue (Arcane Trickster), Warlock (Fiend Patron)

You create a 20-foot-radius Sphere of yellow, nauseating gas centered on a point within range. The cloud is Heavily Obscured. The cloud lingers in the air for the duration or until a strong wind (such as the one created by Gust of Wind) disperses it.

Each creature that starts its turn in the Sphere must succeed on a Constitution saving throw or have the Poisoned condition until the end of the current turn. While Poisoned in this way, the creature can't take an action or a Bonus Action.