4th level Conjuration
Casting Time 1 action
Range 120 feet
Components V, S
Duration Concentration, up to 10 minutes
You create a 20-foot-radius sphere of very thick fog centered on a point within range. The sphere spreads around corners, and its area is heavily obscured.
The fog is so thick that it makes all movement and physical actions are difficult. Any creature of Large size or less attempting to move through it reduces their speed to 1/3 its normal, a successful Strength save allows a creature to move at 2/3 their normal speed. Creatures of Huge or larger size simply treat the fog as difficult terrain.
All physical actions, such as Ability or Skill checks based on Strength or Dexterity, Dexterity saving throws, and melee attack rolls are at advantage, and deal half damage. Most ranged attacks cannot pass though or penetrate the fog.
At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the radius of the fog increases by 10 feet for each slot level above 4th.