Cloud of Seasickness

This is a conversion of the Cloud of Seasickness spell from Pathfinder 1e

You create a 20-foot-radius sphere of yellow, nauseating gas 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 is completely within the cloud at the start of its turn must make a Constitution saving throw against poison. On a failed save, the creature spends its action that turn retching and reeling. Creatures that don't need to breathe or are immune to poison automatically succeed on this saving throw.

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.

A cleric who worships Besmara can replace one of their 3rd level Domain spells with this spell. The decision to substitute a Domain spell must be made upon gaining a new level of cleric, but you can change your decisions on the matter when you level up again.