Inaccurate?

Mage Armor, Mass

(Spell Compendium, p. 136)

Conjuration (Creation) [Force]
Level: Sorcerer 3, Wizard 3,
Components: V, S, AF,
Casting Time: 1 standard action
Range: Close (25 ft. + 5 ft./2 levels)
Target: One creature/level, no two of which are more than 30 ft. apart
Duration: 1 hour/level
Saving Throw: Will negates (harmless)
Spell Resistance: No

You feel arcane energy encompass you, granting you a sense of serenity. As you choose your targets for the spell, you see each one glow briefly with a silver aura.

This spell functions like mage armor (PH 249), except that it affects multiple creatures.