The Fog Spell is a magical spell that enable any conjurer who uses it to create a fog layer or astam of mist. It is one of the many spells in the 2010 Disney fantasy movie The Sorcerer's Apprentice.
A sorcerer or a sorceress creates the fog via their catalyst, either as a ball of fog, or to spray the fog like a fire extinguisher. Once created, they can control the fog as they please, including to find objects that are rendered invisible via sorcery. The user is also able to use this enchantment to obscure the enemy's vision, enabling the user to escape like a smoke bomb.
In the movie, Maxim Horvath uses this spell to find the Grimhold in Dave Stutler's lab. He also utilizes the same spell to create a spray of fog layer in the tunnel to escape during the car chase on the streets of Manhattan.