You create a sphere of fog 20 feet in radius, centered at a point within casting distance. Dense fog fills all corners of the sphere again and causes heavy obscuration. The fog lasts until the end of the spell’s duration, but can still be dispersed by a headwind or stronger (at least 10 miles per hour).
Fog Cloud 5e
Classes: Wizard, Ranger, Sorcerer, Druid
Casting Time: 1 Action
Range: 120 feet
Components: V, S
Duration: Concentration, up to 1 hour
When casting this spell with 2 rings or more, the radius of the fog increases by 20 feet for each ring you use that is higher than 1 ring.