Mage Armor, Swift (3.5e Spell)

A pale blue translucent glow surrounds you, providing a feeling of protection.

The targeted creature gains a +4 armor bonus to AC. The creature can also use its armor bonus against incorporeal attacks (even if its armor bonus is provided from another source such as Bracers of Armor or Full Plate Armor).

For every 5 caster levels you have, you may have an additional creature within 15 ft. be affected by this spell.