Enlarge Person, Mass

Player's Handbook v.3.5 (PH)Core (3.5)

School: Transmutation
Casting Time: 1 full round
Components: V, S, M, F
Range: Close (25 ft. + 5 ft./2 levels)
Target: One humanoid creature/caster level within 30 ft. of each other
Duration: 1 minute/level (D)
Saving Throw: Fortitude negates
Spell Resistance: Yes

This spell functions like enlarge person, except that it affects multiple creatures.