For the vanilla version of the spell, see Mass Invisibility.
Duration: 1 round/level
Casting Time: 7
Area of Effect: 30’ radius
Saving Throw: None
Upon casting this spell, the wizard causes all friendly creatures within the area of effect to be affected by the spell Improved Invisibility. Creatures leaving the area are still subject to the spell’s effect; those entering the area after the casting is completed are not.