Mass Invisibility

Make a spell card:
NameMass Invisibility
SchoolIllusion (Glamer)
LevelArc 7, Beguiler 7, Shu 7, Sor/Wiz 7
ComponentsV, S, M
Casting Time1 standard action
Recharge Time30 minutes
RangeLong (400 ft. + 40 ft./level)
TargetsAny number of creatures, no two of which can be more than 180 ft. apart
Duration1 min./level (D)
Saving ThrowWill negates (harmless) or Will negates (harmless, object)
Spell ResistanceYes (harmless) or Yes (harmless, object)