The Fog Spell is a magical spell that enable any conjurer who uses it to create a fog layer. 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 spray the fog like a fire extinguisher. Once created, they can control the fog as they please, includes find the object that rendered invisible via sorcery. The user also able to use this spell to obscure enemy's vision, enable the user to escape like a smoke bomb.
In the movie, Maxim Horvath use this spell to find The Grimhold in Dave Stutler's lab. He also use the same spell to create a spray of fog layer in the tunnel to escape during the car chase on the streets of Manhatten.